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

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Question 75552: can i get this one checked please
multiply
2m(5m-3)(4m+7)
2m(5m-3)(4m+7)
2m(20m^2-21)
40m^3-42
Click here to see answer by Cintchr(481)

Question 75556: how can i simplify and write with positive exponents only?
(b^2)^-6
over
b^-4
Click here to see answer by bucky(2189)

Question 75488: Perform the indicated divisions.
x^2 -2x -35 / x+5
Click here to see answer by nilan(15)

Question 75504: What expression raised to the fourth power is 81x12y8z16?
Click here to see answer by bucky(2189)

Question 75574: can some one check this for me please?
subtract
6m^2+8m+2 from 8m^2+5m-8
=6m^2+8m+2
=8m^2+5m-8
=2m^2-3-6
Click here to see answer by 303795(595)

Question 75573: can someone check tese for me please?
divide
40x^3-48X^2
over
8x
=5x-6x
and
x^3+2x^2+x+12x+3
=x^2+x-4
Click here to see answer by 303795(595)

Question 75102: Solve the following problems.
What expression raised to the fourth power is 81x^12y^8z^16 ?

Click here to see answer by 303795(595)

Question 75459: hi i need help with Simplifying Rational Expresstions. I have 3 problems that i need help with and would be very grateful if you could do them and explain them as best you can.
12. (2x-14)/ ( 3x^2-21x)
13. (x^2-1)/(2x^2+x-1)
14. (2x^2+12x+18)/(x^2-x-12)
Thank You!
P.S : The Textbook im using is Algebra 1 Concepts and Skills by McDougal. Pg 685 Chapter 11 Test. #s 12,13, and 14.

Click here to see answer by funmath(2925)

Question 75527: what quadratic function represents a porabola where the graph has vertex at (-4,2) and passes through (3,9)
Click here to see answer by jim_thompson5910(28595)

Question 75503: Find the values of each of the following polynomials for the given values of the variable.
-x2-5x-6, x= -3 and x= -2
Thanks
Click here to see answer by jim_thompson5910(28595)

Question 75609: can you help me rewrite the middle term as the sum of two terms and then factor completely?
x^2+5x-24
Click here to see answer by tutorcecilia(2152)

Question 75611: while using ac test determine if the following trinomial can be factored. if so how do you find the value of m and n
3x^2+11x-4
Click here to see answer by stanbon(57361)

Question 75606: can you help me factor this please?
12x^4y^3+16x^3y^3+20x^3y^4
Click here to see answer by psbhowmick(529)

Question 75505: Business and finance. The cost in dollars of manufacturing w wing nuts is given by
the expression 0.07w + 13.3. Find the cost when 375 wing nuts are made. What is
the average cost to manufacture one wing nut?
Thanks
Click here to see answer by tutorcecilia(2152)

Question 75608: can i get help it started out easy now i have confused myself?
add
(2m-n)^2
=4mn^2
Click here to see answer by stanbon(57361)

Question 75490: This is a practice question for me so I know the answer but how do I work this?
Let f(x) = 5x-2.
Find:
(a) f(4) – f(3) Answer is: 5
(b) f(9) – f(8) Answer is: 5
(c) f(12) – f(11) Answer is: 5
(d) How do the results of (a) through (c) compare to the slope of the line that is the graph of f? Answer is: same

Click here to see answer by Earlsdon(6287)

Question 75487: Please help I am having a problem doing the division problems?
Divide.
7x^5 y^5 – 21x^4 y^4 + 14x^3 y^3 / 7x^3 y^3

Click here to see answer by scott8148(6628)

Question 75516: Multiply, using the vertical method.
(2r - 3s)(4r2 + 6rs + 9s2)
thank you
Click here to see answer by checkley75(3666)

Question 75627: How do you write a polynomial in standard form?
Click here to see answer by chitra(359)

Question 75513: Multiply
8pq2(2pq - 3p + 5q)
thank you
Click here to see answer by checkley75(3666)

Question 75659: (r+4)4
Hi, I need help solving this one. I couldn't submit the format properly, not sure how to type exponents? But it is r+4 to the 4th not times 4.
Thank you in advance.
Click here to see answer by Earlsdon(6287)

Question 75663: (r+4)^4 I need help solving this one.
Thank you
Click here to see answer by jim_thompson5910(28595)

Question 75660:
Hi I need help solving this one. I am really stuck!!! I am not sure if I enterend the exponents properly? But the problem reads:
(2m to the 3rd x to the 2nd)to the neg. 1 (3m to the 4th x) to the neg 3
divided by (m to the 2nd x to the 3rd) to the neg 3 (m to the 2nd x) to the neg 5th
Thank you in advance for any help that you can offer me.
Click here to see answer by Cintchr(481)

Question 75666: can i please get help with this?
x^2-10x+24=0
Click here to see answer by jim_thompson5910(28595)

Question 75662: Hi, I can't figure out how to put this in proper format? But I am trying to solve:
divided by 2x-4
Thank you!
Click here to see answer by ankor@dixie-net.com(15656)

Question 75676: I have been haveing so much home work from algebra but it is so confusing please help me thanks in advance .

Use FOIL to multiply:
(4x – 9)(3x – 5)

Multiply:
(x4 + 3x2 – 1)(x2 – x + 2)

Click here to see answer by jim_thompson5910(28595)

Question 75675: I have these problems and in need of help . Please explane and help me . Thanks .

For f(x) = 5x – 4, find f (-1).

Perform the indicated operations:
(x2 – 4x + 1) – (-8x2 + 2x – 6) – (x2 + 3x – 5)

Click here to see answer by jim_thompson5910(28595)

Question 75674: Please help me.
Can some help me . Thanks
please show me how to superscript all exponents. All exponents in final answers should be positive. Final answers should have all single connecting signs and be arranged in descending order.
1. Simplify and evaluate:
(x7 y-4 z0 / 5-2 x3 y-8 z-9)2

2. Convert to scientifique notation (here you may use x as multiplication):
0.00452
Thanks .

Click here to see answer by stanbon(57361)

Question 75699: can some help me simplify this?
x^2+2x-80
Click here to see answer by Earlsdon(6287)

Question 75701: remove parentheses and simplify?
8y-(2y-5x)
Click here to see answer by Earlsdon(6287)

Question 75700: please help!!
3w^2-9w-1 and 8w^2-9w-4

Click here to see answer by Earlsdon(6287)

Question 75704: please help!! I have to add
3w^2-9w-1 and 8w^2-9w-4

Click here to see answer by jim_thompson5910(28595)

Question 75670: Multiply. [(1/2)x+(1/3)][(1/2)x-(1/4)]

Thanks for helping
Click here to see answer by jim_thompson5910(28595)

Question 75707: Find a polynomial f(x) of degree 3 that has the indicated zeros -2 1 5 and satisfies the given condition f(3)= -40.
I get most of the problem. THe thing that I dont understand is how they got from 2(x+2)(x-1)(x-5) to 2(x^3 - 4x^2 - 7x + 10)
thank you
Click here to see answer by stanbon(57361)

Question 75687: x+4/x^3-3x^2-4x+12 + 3/x^2-5x+6 = 3x/x^2-4.
This problem is not working out for me, I come up with x^2+3x+8=0
Click here to see answer by ankor@dixie-net.com(15656)

Question 75753: I do not know what this is asking me. Please help.
Rewrite the middle term as the sum of two terms and then factor completely.
4z^3 – 18z^2 -10z

Click here to see answer by checkley75(3666)

Question 75748: Factor each polynomial completely. To begin, state which method should be applied as the first step, given the guidelines of this section. Then continue the exercise and factor each polynomial completely.
M^4 – 9n^4

Click here to see answer by checkley75(3666)

Question 75745: Remove the parentheses in each of the following expressions and simplify when possible.
8d – (-7c -2d)

Click here to see answer by bucky(2189)

Question 75769: A triangle has 3 sides: b – 2, 2b + 4, and 3b -6. Find the expression that represents its perimeter.
Click here to see answer by checkley75(3666)

Question 75751: Factor completely.
9x^2 + 12xy + 4y^2 -25

Click here to see answer by checkley75(3666)

Question 75740: Find the values of each of the following polynomials for the given values of the variable.
-x^2-5x-6, x = -3 and x = -2

Click here to see answer by checkley75(3666)

Question 75747: Factor each polynomial completely. To begin, state which method should be applied as the first step, given the guidelines of this section. Then continue the exercise and factor each polynomial completely.
2p -6q + pq – 3q^2

Click here to see answer by Cintchr(481)

Question 75823: (2x^2-4x+2)/(x-1)
Click here to see answer by terbear1963(43)

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, 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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