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

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Question 59024: solve x^4-8x^2+7=0
Click here to see answer by venugopalramana(3286)

Question 59060: [(3x^2)^3]x^2
-------------.
9x^3
STATES TO SIMPLIFY?????
Click here to see answer by funmath(2925)

Question 59041: Please help - need to solve:
x/x^2-1 = 1/x+1 + 1/x^2-1
Click here to see answer by funmath(2925)

Question 59097: Please help w/ the following:
2x^-2+3x^-1+1=0
Thank you.
Click here to see answer by funmath(2925)

Question 59160: Can you explain to me in a simple way how or a step by step way to evaluate rational expressions?
Chapter 7.1 exercise
# 52. 3x^2+8x+4 over 3x^2-4x-4
Chapter 7.3
# 41. 3 over k^2+5k with a comma between
2 over k^2+3k-10
Thanks for any help you can give.

Click here to see answer by stanbon(57290)

Question 59111: Factor 27x^3-8y^3
Click here to see answer by funmath(2925)

Question 59221:
Click here to see answer by funmath(2925)

Question 59327: I need help solving the following problem please :
Find the excluded values for : 6 (over or divided by) m(m+1)
thank u
Click here to see answer by funmath(2925)

Question 59329: I need help with the following pleas :
Find the quotient
5cd divided by 10c divided by d
Click here to see answer by checkley71(8403)

Question 59398: Using polynomials times monomials how do i set up the steps in this problem 4(2n + 3) - 3(n - 1) = 0
Click here to see answer by Edwin McCravy(8893)

Question 59383: Factor
64w^3 + 8x^3

Solve
2x^2 - 11x + 13 = 1
Click here to see answer by funmath(2925)

Question 59422: what is the answer to msquare+4m-21

Click here to see answer by uma(370)

Question 59424: 1. what is the answer to msquare+4m-21
2. what is the answer to 2xcube+5xsquare - 12x =0
3. 2ysquare = -3y + 35
4. (4x - 3)(4x + 3)
Click here to see answer by uma(370)

Question 59449: please help me with this problem. i don't understand what to do when their is a number in front of the variable, like the 3 in front of y^2
3y^2-15y=12
Click here to see answer by checkley71(8403)

Question 59530: Please check for me.
I have factored 3a^2(a-b)-6a(a-b)+21(a-b)
I got 3(a-b)(a^2-2a+7).
Thanks
Click here to see answer by stanbon(57290)

Question 59423: what is the answer to msquare+4m-21
what is the answer to 2xcube+5xsquare - 12x =0
2ysquare = -3y + 35
(4x - 3)(4x + 3)
Click here to see answer by stanbon(57290)

Question 59537: I tried solving the following problem, but my answer didn't match up with the one at the back of the book. The problem asks me to find a polynomial function with integer coeff. that has the given zeros: 0, 3,3+i, 3-i. The answer at the back of the book is x^4-9x^3+28x^2-30x.
Click here to see answer by josmiceli(9668)

Question 59542: how do u factor perfect squares and binomials squared?? I can do the simple one but i can't seem to get a hold of the more complicated ones. If u can explain this concept to me I will may extemely happy. Thanks for the help

confused
Click here to see answer by stanbon(57290)

Question 59540: a garden area is 30ft long and 20ft wide. a path of uniform width is set around the edge. if the remaining garden is 400ft squared.what is the width of the path?
Click here to see answer by stanbon(57290)

Question 59582: x2-4/16x+32
Click here to see answer by funmath(2925)

Question 59596: My question is Problem 78 is definitely not pretty. Your best bet is to use Examples 7 and 8 on pp 311-312 as a model for your solution. It might make life much simpler if you treat the fractions in the x-terms as coefficients.
(x/3 + 3/4)(3x/4 -3/5) (note that these are fractions)

examples 7 and 8 are using the vertical method for polynomials I do not understand i tried to answer this and this is what i got
x + 3 3x - 3
- - x= 4 - - = 3x= 5
3 4 4 5
Click here to see answer by stanbon(57290)

Question 59458: f(x)=x^2-1 g(x)=1-2x f(g) (-1)(g(f))(-1)
Click here to see answer by funmath(2925)

Question 59698: (x+5)(3x-1)+13=0

2x^2+3x=20
Click here to see answer by checkley71(8403)

Question 59663: When 16b2 + 10b - 21 is factored, one factor is:
4b - 7
8b + 7
2b - 3
16b + 3
none of these
Click here to see answer by funmath(2925)

Question 59754: solve: (x+2)/(x-3)=(x-5)/(x+3)
Click here to see answer by checkley71(8403)

Question 59754: solve: (x+2)/(x-3)=(x-5)/(x+3)
Click here to see answer by josmiceli(9668)

Question 59755: Solve each equation. If a solution is extraneous, so indicate.
30/y-2+24/y-5=13
Click here to see answer by aaaaaaaa(138)

Question 59761: I need help to solve the following problem please!!!1
Find the excluded values for :
4s over s^2 + 3s
*s^2 is s squared*
THank you!
Click here to see answer by Cintchr(481)

Question 59860: Please help me solve this equation:
Click here to see answer by funmath(2925)

Question 59958: Maya has deposited $600 in an account that pays 5.64% interest, compounded continuously. How long will it take for her money to double?

****can you please assist me with this problem, I can't seem to figure it out. Thanks again
Click here to see answer by venugopalramana(3286)

Question 59838: solve algebra problems
27x to 2 power -3
Click here to see answer by funmath(2925)

Question 59960: I need some help on this question, I keep on getting confused can u please help?
Thanks in advance
A computer is infected with the Sasser virus. Assume that it infects 20 other computers within 5 minutes; and that these PCs and servers each infect 20 more machines within another five minutes, etc. How long until 100 million computers are infected?
Click here to see answer by stanbon(57290)

Question 59971: For this equation, solve for A.
CKA/EN=K^2^/H
Click here to see answer by tutorcecilia(2152)

Question 59961: I have never been more confused in my life... I tried this for the first one but I don't think that I have it right PLease HELP!!!!!
Thanks

fx=1-3-2+1
fx=3
I'm not too sure about this please please I really need help on this problem

Evaluate each of the functions below at x = 1, 2, 4, 8, and 16. Plot the graph of each function. Classify each as linear, quadratic, polynomial, exponential, or logarithmic, and explain the reasons for your classifications. Compare how quickly each function increases, based on the evaluations and graphs, and rank the functions from fastest to slowest growing.
- f(x) = x3 - 3x2 - 2x + 1
- f(x) = ex
- f(x) = 3x - 2
- f(x) = log x
- f(x) = x2 - 5x + 6

Click here to see answer by funmath(2925)

Question 59829: Solve each equation. If a solution is extraneous, so indicate.
(5)/(2z+z-3)-(2)/(2z+3)=(z+1)/(z-1)-(1)
Click here to see answer by funmath(2925)

Question 59969: My homework is needed tommorow and have no idea of working through it .
please assist or even a hint would help ...

Power climbers Bi- motors Ltd orders and sells mountain climbers bikers. The company’s cost accountant has examined cost data and established a cost function which expresses the annual cost (C) in K $ of purchasing, owning and maintaining inventory as a function of size of each order (q) it places for the bikes. The function is specifically of the form:
C = 4860/q + 15q + 250,000
Determine the order that minimizes annual inventory list and the minimum average inventory cost per unit.

Click here to see answer by uma(370)

Question 59994: I need help working out these equations. My teacher made these problems up.
-8+t/3=7
4(x+3)=20
4y+3
_____ =9
7
Click here to see answer by uma(370)

Question 59818: How do I work (3y-5)(2y-7)
Click here to see answer by tutorcecilia(2152)

Question 60042: How Do I Factorize These problems?
22)y2(squared)-5y+4
and
40)8x2(squared)+8xy+8xz+3x+3y+3z
Click here to see answer by stanbon(57290)

Question 60087: solve the equation by simplifying both sides and then using transformations to isolate the variable

2x+3x=5
Click here to see answer by greenman(5)

Question 60125: Solving Rational Equations.
Solve, and check
y/10 = 2/5 + 3/8

-1/3 - 5/4y = 3/4 - 1/6y
Click here to see answer by funmath(2925)

Question 60171: Multiply.
71. (X-1/2)(2X^3-4X^2+3X-2/5)
Click here to see answer by chitra(359)

Question 60222: I need help solving [3+(4b+1)]^2 I know what the answer should be, 16b^2+32b+16 but I am not sure how to actually work the problem out to find the answer.
Click here to see answer by checkley71(8403)

Question 60256: I need help with "Find a polynomial of lowest degree with interger coefficients that has the indicated zeroes: 1+i,1-i,1,3"
Click here to see answer by Edwin McCravy(8893)

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, 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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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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, 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