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

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

Question 248424: hi i would like to know what are all the real zeros of f(x)=x^4-2x^3-23x^2+24x+144? and can u please show me hot to work it out
Click here to see answer by Alan3354(30993)

Question 248447: Hi - last one for the assignment!
I am doing well in this class, but this chapter truly has me stumped!
Problem:
-3x^3+4x^2-x-2 for x = -2
Again - I can't thank you folks enough!
Click here to see answer by richwmiller(9143)

Question 246375: determine lowest common denominator
2/3
3/4
7/12
9/16
Click here to see answer by Alan3354(30993)

Question 248452: I just learned this today and not sure how to do this. Please help by showing how to arrive at the arrive at the answer. I have a quiz tomorrow on it. Thank you!!
x^4-15x^2y^2-16y^4
Click here to see answer by jim_thompson5910(28595)

Question 248548: A child weighing 70 lbs sits 5 ft. from the fulcrum on a teeter totter, How far should the other child who weighs 85 lbs sit from the fulcrum in order to keep the teeter board balanced? Which concept would you use, from the ones you learned this week, to solve this problem? Discuss different approaches to solve it.
Click here to see answer by oberobic(2304)

Question 248560: two machines are turned on at 8:00A.M. if one can produce 63 items each hour and the other can produce 61 items each hour, at what time will they produce a total of 992 items?
Click here to see answer by ankor@dixie-net.com(15652)

Question 248614: 20x2+27X+9 Please explain how to do this
Click here to see answer by stanbon(57354)

Question 248653: There were 37,000 people at a ball game in Los Angeles. The day's receipts were $262,000. How many people paid $11 for reserved seats and how many paid $6 for general admission?
Click here to see answer by checkley77(12569)

Question 248678: X^3+2 x^2+3 x+6 = 0 rational root
Click here to see answer by stanbon(57354)

Question 248766: 4x2/2x9
Click here to see answer by unlockmath(1599)

Question 248806: how do i solve this problem by using Simplifying Rational Expressions
d+7/d^2-49
Click here to see answer by jim_thompson5910(28595)

Question 248849: How do i factor -35+17y-7y^2
Click here to see answer by stanbon(57354)

Question 248782: the polynomial 0.041h - 0.018a - 2.69 can be used to estimate the lung capacity, in liters, of a female with height h cm and age a years. find the lung capacity of42 year old woman who is 155 cm tall. round to the nearest liter.
Click here to see answer by tutorcecilia(2152)

Question 249014: Here is the problem, can you solve it?
4x^2 – 4x + 1/ 2x^2 + 9x – 5
Click here to see answer by dabanfield(803)

Question 249046: 4x^3 - 25x / x^2 - 14x +48 how do you factor this?
Click here to see answer by actuary(112)

Question 249064: I am supposed to simplify this rational expression:
__2x__ (2x over x + xy) I don't even know where to start.
x + xy
Click here to see answer by College Student(505)

Question 249059: I need help with these problems. I thoughly dont understand them.
Simplify the complex fractions by any method. I was trying to do it by combining or multiplying. Can you help me please.
1) -2/ab^2(numerator) / 5/a (denominator)
2) 3y+2/7y^3(numerator) / y-1/y^2(denominator)
3) 1/3y+1/6y(numerator) / 1/2y+3/4y(denominator)
4) 2/y+4 (numerator) / 3/y-4 - y^2 - 16(denominator)

would greatly appreciate any help. Thanks even for the time and consideration spent looking at this.
Click here to see answer by College Student(505)

Question 249093: can you give me atleast 5 problems of "restricted values & reducing rational expression to lowest term" please?? i need it...thanks!:)
Click here to see answer by stanbon(57354)

Question 249088: hello
I do not have an exact idea on how to solve this problem below
(x+2)(x-14)(x+1)>0

There will either be a solution set for {x| }
or it will be all real numbers or finally, no solution???
I got as far as multiplying them threw the distributive process. Dont know if this was necessary or not..???
x3rd power -11x2nd power-40x-28 > 0

Click here to see answer by stanbon(57354)

Question 249139: Factor each polynomial completely. If a polynomial is prime, say so
3x^2 - 18x – 48

I have no idea where to begin
Click here to see answer by edjones(7569)

Question 249273: x^2-25
----- I think it = x^3-5 ? Please Help!
x+5
Click here to see answer by tutorcecilia(2152)

Question 249268: 9-x^2
Click here to see answer by tutorcecilia(2152)

Question 249270: 4y^2+16y+16=
can you please show me all the steps, because I keep missing one and I keep getting the wrong answer, Thank you.
Click here to see answer by College Student(505)

Question 249337: Factoring a perfect square trinominal
3x^2+6x+3
Click here to see answer by edjones(7569)

Question 249337: Factoring a perfect square trinominal
3x^2+6x+3
Click here to see answer by jim_thompson5910(28595)

Question 249340: 12a^2+36a+27
x^3+x^2-x-1
3a-3b-xa+xb
If you can please help me with these three
Click here to see answer by dabanfield(803)

Question 249349: when you are factoring the problem, 6y^2-5y-6, how do you factor out the 6 in front of y^2
Click here to see answer by jim_thompson5910(28595)

Question 249296: please help me solve this equation I need to factor it 36-25v^2
Click here to see answer by College Student(505)

Question 249380: Solve the equation. 4(7x - 1) = 16
Click here to see answer by richwmiller(9143)

Question 249396: (r+1/2)(r+1/4) multiply

hello, im not sure about how to answer this equation. i think your suppose to multiply across...if so i got
r^2 + 2r + 1
-------- or (r+1)(r-1) ?????????
8 --------
8

Click here to see answer by richwmiller(9143)

Question 249363: How do you solve (x^2y)(xy^3)^3
Click here to see answer by College Student(505)

Question 249428: 5x^4-80y^4
Click here to see answer by checkley77(12569)

Question 249536: the sides of a triangle have lengthes of (3x-5), (x-7) and (7x+12). what is the perimeter of the triangle in terms of x?
Click here to see answer by edjones(7569)

Question 249567: factor 125x3 + 64y3
Click here to see answer by chosenpoint(26)

Question 249619: Factor 4x^2 -8x completely. Please help, I am totally confused with this problem.
Click here to see answer by checkley77(12569)

Question 249841: Factor completely: 32x^+98y^ Also if you could do this one Two angles of a
triangle have the same measure and the third
angle is 1/4 the size of each of the other two.
Find the measure of each angle.
Click here to see answer by solver91311(16885)

Question 249919: Good evening.
My question:
Multiply (x^r-y^f)(x^2r + y^2r)
(x^r * x^2r) (-y^f * y^2r)
(x^4r2) (-y^f2r)
x^3r-y^3f x^3r-y^3f
I don't know if I'm on the right track. Any help would be appreciated.
Thank you!
Click here to see answer by stanbon(57354)

Question 249952: x^2 / x^2-4+x+2/x-2+x-2/x+2
Click here to see answer by College Student(505)

Question 249942: i really don't understand how to solve for r in the equation r=(ab)/(a+b)
Click here to see answer by College Student(505)

Question 250004: Factor 3z^2+14z +8
I have tried this repeatedly and I keep coming up with an answer that is exactly like the problem

Click here to see answer by richwmiller(9143)

Question 250004: Factor 3z^2+14z +8
I have tried this repeatedly and I keep coming up with an answer that is exactly like the problem

Click here to see answer by Edwin McCravy(8909)

Question 250058: Perform the inidicated operation:
2x^2-3x-20/2x^2-5x-12
-------------------
2x^2-7x-30/4x^2+12x+9
Click here to see answer by jsmallt9(3296)

Question 250172: i need help factoring polynomials?
6xsq.+7x-20

Click here to see answer by richwmiller(9143)

Question 250219: This is the third time I have asked a question but no solution to any problems.
I do not understand how to Simplify completely
-7xy^2 over 28x^2y
x-2 over 8x^2-32
Find the LCD
(5) (7)/(x-6'x^2-12x+36)
5 -2 over 7ab^5' 7a^3b^3
Click here to see answer by jsmallt9(3296)

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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