Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!

Tutors Answer Your Questions about Polynomials-and-rational-expressions (FREE)

Question 446368: factor the expression completely:
x^4-9x^2
please help me as as u cannnnnnnnnnnnnnnnn
waiting for replyyy
Click here to see answer by nerdybill(6948)

Question 446395: factor the expression completely
m^3+11m^2+28m
please help mee solve ti soonnnn
Click here to see answer by stanbon(57220)

Question 446395: factor the expression completely
m^3+11m^2+28m
please help mee solve ti soonnnn
Click here to see answer by lwsshak3(6463)

Question 446485: (10x4-6x-15+5x3) divide(/) (2x+1)
Click here to see answer by stanbon(57220)

Question 446527: (10x^4-6x-15+5x^3)/(2x+1)
Long Division Please
Click here to see answer by mohammadrezai(14)

Question 446461: (√(u)-√(v))/(√(u)+√(v))
Click here to see answer by mohammadrezai(14)

Question 446462: need help with dividing (35b^3+25b^2+30b+43)÷(5b+5)i think the correct answer is 7b^2+8+3/5b+5 not sure
Click here to see answer by mohammadrezai(14)

Question 446581: factor the expressions completely:
x^4+4x^3-45x^2
x^3+2x^2-4x-8
please solve these tow question soon
thankz
Click here to see answer by chriswen(106)

Question 446632: I am having trouble trying to solve the problem z-5/z+2 = 1/7 I do not know where to start on this. I am not sure if I got the lcm correct but I think it is 7(z+2)
Click here to see answer by scott8148(6628)

Question 446647: I need to round this to the nearest hundreth, can someone please help me I have problems rounding. Thanks so much.
I= 7920/520= ??

Click here to see answer by stanbon(57220)

Question 446646: Could someone please help me with this? I do not understand it at all, thank you so much.
In some other universe, K. Pack believes he has discovered a relationship between a planet’s distance D from its sun and the time T it takes to orbit its sun. This formula T= √D³ where T is in earth years and D=1 corresponds to the distance between earth and our sun, or 93,000,000 miles.
(a) Planet Eta is 33 times farther from its sun than earth is to our sun. Estimate the number of earth years required for Eta to orbit its sun according to K. Pack’s formula.
a.) Planet Eta takes ? (how many) Earth years to orbit its sun. (round to the nearest tenth as needed)
(b) Write this formula with rational exponents.
√(D³= ?)
(Simplify your answer. Use integers or fractions for any numbers in the expression)

Click here to see answer by stanbon(57220)

Question 446730: t(5t^2+6t)
Click here to see answer by rfer(12644)

Question 446771: (y^2-4/y+3)=2-(y-2/y+3)
Click here to see answer by mananth(12270)

Question 446221: if x/y+y/x=-1,then x3-y3=?
Click here to see answer by robertb(4012)

Question 446796: The problem says to solve 3/(x-3) - 2/(x-4) = -3/(x-3)(x-4)
please include the steps you took to get this answer
Click here to see answer by mananth(12270)

Question 446811: Hi! My question has to do with long division of polynomials. I am supposed to divide 2x+5 into 2x*3+x*2+4x+35. I always start strong knowing the first term of my answer will be x*2, but then I get completely lost as to where to go from there. Any help would be greatly appreciated! Thanks!
Click here to see answer by sudhanshu_kmr(1152)

Question 446839: So I'm dealing with trinomials and I think it's along the line of polynomials.
In order to solve this question I have to factor this trinomial -->32Nsquared-80N+50.
Thank you for the help!
Click here to see answer by nerdybill(6948)

Question 446907: The length of a rectangle flower garden is three feet more than its width. The area is 70 square feet. Using an algbriac equation find the length and the width of the flower garden.
Would I use width = x and length = x+3 = to 70? Is that how I would set this equation up?

Click here to see answer by nerdybill(6948)

Question 446999: how do you solve the problem (b+2)(-b^2+4b-3)
Click here to see answer by algebrahouse.com(1079)

Question 447038: 8x^2+54x-45 factor?
Click here to see answer by MathLover1(6614)

Question 447059: Please help me solve this problem: 5a^2-15
Click here to see answer by MathLover1(6614)

Question 447004: how do you solve 25a=10a^2
Click here to see answer by jorel1380(2518)

Question 447061: Divide
(15x/2a)/(5x^5/4ax). Simplify as much as possible. 15x / 4ax
--- ---
2a 5x^5
Click here to see answer by sudhanshu_kmr(1152)

Question 447096: Solve the equation by factoring. 49w(w)-25=0
(w is squared)
Click here to see answer by poliphob3.14(115)

Question 447096: Solve the equation by factoring. 49w(w)-25=0
(w is squared)
Click here to see answer by chriswen(106)

Question 447194: Solve for x:
(x – 3)(2x – 7) = 0
x2 + 6x – 27 = 0
x2 + 6 = -5x
x2 – 9 = 0
Click here to see answer by jorel1380(2518)

Question 447295: FACTOR.

21x^2 + 7x

Click here to see answer by jorel1380(2518)

Question 447437: Not sure exactly which category this goes under. I have a very long math problem I'm struggling to solve. I've googled and seen parts of it or similar problems, but I haven't seen the full thing, so I'm not entirely sure how to go about solving this. Any help will be appreciated, so I thank you in advance. I will also post the parts I think I already worked out so that you can see what I've done so far.
A gardener has a rose garden that measures 30 feet by 20 feet. He wants to put a uniform border of pine bark around the outside of the garden. Let x be the width of the border in feet. Write an expression for the total area of the border in terms of the width x.
I came up with 4x^2 + 100x as my answer. Correct?
Find out how wide the border should be if he has enough pine bark to cover 336 square feet.
I came up with 3 feet as my answer. Correct?
If the border needs to be covered to a depth of 3 inches and pine bark costs $29 per cubic yard, what will the material cost to lay the pine bark border? Assume that you must purchase a whole number of cubic yards and not a fraction of a cubic yard.
Here's where I'm struggling with *how* to answer this one. I came up with $6786, but I'm thinking that's way off. Any advice or suggestions?
Also, now assume you can actually buy as much or as little bark as you need to cover the border area, that is, the vendor will sell even a small fraction of a cubic yard if you want. Write an expression for the cost in dollars as a function of the width x, of the border in feet. Assume again that the border is to be covered to a depth of 3 inches and that pine bark costs $29 per cubic yard.
Please help! :) Thanks!

(There are actually two more questions to this problem, but I'm hoping the above, when I'm able to figure it out, will help me in solving them.)
Click here to see answer by stanbon(57220)

Question 447467: I don't understand this problem can someone please help me to see what I'm doing wrong? (-5a²)(a - 5)²

Click here to see answer by Edwin McCravy(8880)

Question 447601: Simplify 4(2x + 1) - 3(y + 1)
Click here to see answer by stanbon(57220)

Question 447698: How to solve -4/3x+4/9=-x^2
Click here to see answer by stanbon(57220)

Question 447722: How do you factor 512w^24-2?
Click here to see answer by Alan3354(30959)

Question 447717: 6x^2+33x+15
Click here to see answer by Leaf W.(97)

Question 447728: Assume that y varies inversely as x. If y = -8 when x = -9, find y when x = 4
Click here to see answer by solver91311(16868)

Question 447729: Im having trouble factoring polynomials. Can you please teach me how. Heres one of my homework problems: 36m2-81
Click here to see answer by josmiceli(9649)

Question 447729: Im having trouble factoring polynomials. Can you please teach me how. Heres one of my homework problems: 36m2-81
Click here to see answer by MathLover1(6614)

Question 447736: (x^6-x^5+x^4)/x^2
Click here to see answer by Gogonati(809)

Question 447736: (x^6-x^5+x^4)/x^2
Click here to see answer by MathLover1(6614)

Question 447765: Can you help me find the zeros of thie equation 3x^4-4x^3-6x^2+20x
Click here to see answer by solver91311(16868)

Question 447810: can you simplify 5w/10?
Click here to see answer by Leaf W.(97)

Question 447964: does 2x=10x have a solution
Click here to see answer by Alan3354(30959)

Question 447977: how do u solve these equations 8x^7-4x^5-18x^3+9x and x^13-15x^9-16x^5?
Click here to see answer by rwm(914)

Question 448006: I need help solving the following equation 6x2-35x=6
Click here to see answer by solver91311(16868)

Question 448060: 2x+(-4x)+x

Click here to see answer by algebrahouse.com(1079)

Question 448082: I need assistance in solving this equation: n/2 = n+1
Click here to see answer by ptaylor(2048)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835