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

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

Question 387122: Find a polynomial function of degree 4 with -2 as a zero of multiplicity 1, 3 as a zero of multiplicity 2, and -1 as a zero of multiplicity 1.
Click here to see answer by Jk22(389)

Question 387128: Write the following as a radical expression
u 2/5
is it 5 sqrt u^2
Click here to see answer by user_dude2008(1861)

Question 387167: can you send me a problems showing the steps on how to show the foil method
Click here to see answer by stanbon(57323)

Question 387167: can you send me a problems showing the steps on how to show the foil method
Click here to see answer by Edwin McCravy(8908)

Question 387178: Subtract. Write your answer in lowest terms.
w + v/7w - 2w - 7v/ 7w
Click here to see answer by stanbon(57323)

Question 387220: In class we are trying to factor special products; trinomials to be specific. We need to get it in perfect square trinomial pattern. Here's the question:
9t^2-12t+4
Thanks
Click here to see answer by jim_thompson5910(28593)

Question 387171: Multiply. Write your answer in lowest terms.
9x/14u * 2ux/x
Click here to see answer by user_dude2008(1861)

Question 387234: Not understanding please help?
Completely factor the expression
27x2y + 180xy2 + 75y3

Click here to see answer by jim_thompson5910(28593)

Question 387174: Divide. Write your answer in lowest terms.
7x/3ux / 5x/12u
Click here to see answer by rfer(12657)

Question 387268: x-2/8xsquare-32
Click here to see answer by mananth(12270)

Question 387339: Factor completly
(20b^2+100bt+125t^2)
I understand the GCF is 5 and I had tried to factor it out getting
(5(4b+5t)(b^2+25t))
No matter where I place the numbers or what numbers I use I can't get both 100bt AND 125t^2. I e-mailed my teacher for help 5 days ago with still no response and at this point any help is REALLY appreciated!!!

Click here to see answer by jim_thompson5910(28593)

Question 387341: Rewrite with a rational exponent
^4√(23)
Here is why I am lost, I thought in order to simplify a square root a number was needed that can be powered 4 times to = 23. I can do 2*2=4*2=8*2=16 and 3*3=9*3=27 (which is already more then 23) Is there a solution to this problem??
Click here to see answer by user_dude2008(1861)

Question 387342: Factor completly
6x^6-48x^5+48x^4
The GCF is 6x and I tried to factor this and ended up with
6x^4(x^2-8x)(x-6)(which I know is wrong)
I can't seem to figure this out so any help is greatly appreciated!!
Click here to see answer by stanbon(57323)

Question 387338: Subtract, Simplify if possible.
I have tried this problem but I am not sure if this is right:
(7-z/z-5) - (7z-8/5-z)
I ended up with the answer
(8z-1/5-z)
But I don't think that is right because the denominators are different in both equations.
Click here to see answer by stanbon(57323)

Question 387395: What is the difference in how you work the sum of squares and the difference of squares?

Click here to see answer by stanbon(57323)

Question 387405: Solve for w.
4 + 5/w - 7 = 7/(w + 1) (w - 7)
(If there is more than one solution, separate them with commas.)
Click here to see answer by stanbon(57323)

Question 387447: Multiply and simplify
((36d^2)/(2d^2-16d+32))*((2d-8/(6d))
Would I flip the numerator and denominator in the second and multiply and simplify??
Click here to see answer by stanbon(57323)

Question 387448: Solve
(5/z)=(7/z)-(1/5)
I don't understand how the solution can end = 5/z
Click here to see answer by stanbon(57323)

Question 387445: Perform the indicated operations and simplify
(w-1/w-9)-(w+1/w+9)+(w-153/w^2-81)
Now would the first two cancel themselves out leaving(w-153/w^2-81) which is then factored to (w-153/(w-9)(w+9) or do I multiply the first two to get the denominators to all be the same?

Click here to see answer by stanbon(57323)

Question 387412: Simplify as much as possible.
w/w + w/2 3 - 2/w - 1
Click here to see answer by gwendolyn(128)

Question 387482: 8)Perform the indicated operation. Simplify if possible.

Please help!
Click here to see answer by tara0066(31)

Question 387482: 8)Perform the indicated operation. Simplify if possible.

Please help!
Click here to see answer by edjones(7569)

Question 387482: 8)Perform the indicated operation. Simplify if possible.

Please help!
Click here to see answer by Alan3354(30993)

Question 387455: Rationalize the denominator. Assume that all expressions are under radicals represent positive numbers.
(√r-√s)/(√r+√s)

Is the answer 0????
Click here to see answer by edjones(7569)

Question 387439: 3x + 1 / x
Click here to see answer by Alan3354(30993)

Question 387496: Can someone please help!!
Multiply
x+x9x2+4x-46
Click here to see answer by rfer(12657)

Question 387409: Express as a single fraction in lowest terms:
1 - 2w - 6y/5w + 4w - y/2w
Click here to see answer by unlockmath(1599)

Question 387453: Find the following
^18sqrt(-7)^18 (this is a power over the beginning of the sqrt symbol.)
simplify
please help me i am lost, especially with the -7

Click here to see answer by jim_thompson5910(28593)

Question 387333: How do I rewrite this with positive exponents
4x - 2 - 2
Click here to see answer by jim_thompson5910(28593)

Question 387519: I need help dividing
(x^2+6x-50)/(x+8)
Click here to see answer by Theo(3459)

Question 387337: I am lost on this problem: (35b^(3)+25b^(2)+30b+47)÷(5b+5)
I started with the first part
(35b^(3)+25b^(2)+30b+47)and I tried to divide each part by the second part
(5b) (5b) (5b) (5) but none of my answers were the same as the possible answers.

Click here to see answer by Theo(3459)

Question 387562: Find the LCM of (3+8s), (9-64s^2), and (3-8s).
The LCM is ?

Click here to see answer by ewatrrr(10682)

Question 387617: What is the answer when using the binomial theorem or Pascal's triangle to expand the following binomial (4-3x)4?
Click here to see answer by stanbon(57323)

Question 387631: can someone help me with this problem? It is a fraction.
3x^2 - 5x over 18x - 30
Click here to see answer by rfer(12657)

Question 387683: Solve the following proportion for u:
u/12 = 11/13
Round your answer to the nearest tenth.
Click here to see answer by rfer(12657)

Question 387687: Divide. Write your answer in lowest terms.
15xy/8x / 9y/5x
Click here to see answer by rfer(12657)

Question 387685: Chau runs 4 miles in 30 minutes. At the same rate, how many miles would he run in 24 minutes?
Click here to see answer by rfer(12657)

Question 387646: If a stone is tossed from the top of a 190 meter building, the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+190, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest hundredth's place, include units in your answer
Click here to see answer by nerdybill(6958)

Question 387711: 3x^3 - 48xy^2
Click here to see answer by user_dude2008(1861)

Question 387710: Multiply
-5x + 4
by
4x2 + x

Click here to see answer by robertb(4012)

Question 387710: Multiply
-5x + 4
by
4x2 + x

Click here to see answer by rfer(12657)

Question 387704: Subtract.
(-4 – 2x5 + 9x7 – 8x6) – (x6 + 4x5 + 4 + 3x7)

Click here to see answer by Jk22(389)

Question 387730: Joe has a collection of nickels and dimes that is worth $2.10. If the number of dimes was tripled and the number of nickels was increased by 24, the value of the coins would be $6.30. How many nickels and dimes does he have?

Click here to see answer by edjones(7569)

Question 387726: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
3x + 7y = 77
-2x + 7y = 42

Click here to see answer by edjones(7569)

Question 387700: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
3x + 7y = 77
-2x + 7y = 42

Click here to see answer by edjones(7569)

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