Questions on Algebra: Negative and Fractional exponents answered by real tutors!

Tutors Answer Your Questions about Exponents-negative-and-fractional (FREE)

Question 466440: (5-9)^2+2
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(7-8)^2*3^2
Click here to see answer by Scorinitron(19)

Question 466949: Fractions are not my strong suit..and I have no clue where to start to solve this...i know once i see it a lightbulb will flash in my head
1/4(5x-1/2)-5/3<1/3
Click here to see answer by ccs2011(207)

Question 467157: Partial fraction decomposition:
(5x^2+20x+6)/x^3+2x^2+x
Here's what I got but I think it is wrong:
(5x^2+20x+6)/x(x^2+2x+1)
(5x^2+20x+6)/x(x+1)^2
(A/x)+(B/(x+1))+(C/(x+1)^2)
A(x+1)(x+1)^2 + B(x)(x+1)^2 + C(x)(x+1)
(5x^2+20x+6)=Ax^3+Bx^3+3Ax^2+2Bx^2+Cx^2+3Ax+Bx+Cx+A
(5x^2+20x+6)=x^3(A+B) + x^2(3A+2B+C) + x(3A+B+C) + A

A+B=0
3A+2B+C=5
3A+B+C=20
A=6
A=6
B=-6
C=-1
But this isn't right. Where did I go wrong?
Click here to see answer by robertb(5830)

Question 467332: How would you simplify the problem (27^-2)^-1/3?
Click here to see answer by Alan3354(69443)

Question 467484: am having trouble figuring out how to solve (6x^2y^4)^1/2. I was able to solve (x^2y^4)^1/2, which is xy^2 but not sure how to solve for 6.
Click here to see answer by lwsshak3(11628)

Question 468787: solution set algebra -2x>1/9
Click here to see answer by rfer(16322)

Question 469169: 1/(a^-1/3)
Click here to see answer by Tatiana_Stebko(1539)

Question 469257: i dont know what catagory this would be considered but i have a question how do i solve -3(5-6)-4(2-3)
Click here to see answer by ccs2011(207)

Question 469628: (1/81)^3/4
Click here to see answer by Tatiana_Stebko(1539)

Question 470439: Having problem understanding how to write number as a power of the given base:
16; base 2
-216; base -6
2401; base 7
256; base -4
8/27; base 2/3
Click here to see answer by lwsshak3(11628)

Question 470574: If I have (1/A+1/B)^-1 That is AB/A+B
What if it were (1/A+1/B+1/C)^-1
I am trying to figure this out, but I am having some difficulty.
Click here to see answer by robertb(5830)

Question 471085: x + bx/c = a
? x = >>>
Click here to see answer by Tatiana_Stebko(1539)

Question 472684: what percent of 320 is 180
Click here to see answer by algebrahouse.com(1659)

Question 473359: [ab-5a+3b-15]/[ab-5a-2b+10] How would you simplify a fraction like this or like [2-x]/[x^2-4] VERY VERY VERY confusing and I've tried a few ways but they don't make much sense please help
Thank you so much for your time you are wonderful!!
Click here to see answer by Edwin McCravy(20060)

Question 473536: Simplify by factoring.
√180x^4=__
Click here to see answer by stanbon(75887)

Question 473692: Subtract and simplify, if possible: 1-v/v-6 - 3v-2/6-v
Divide: 8/x divided by 64/x
Click here to see answer by stanbon(75887)

Question 473699: I am trying to solve this equation and I am having a hard time with it... x^-1 + 3/(x+2) = 8 1/2 solve for x
Click here to see answer by Alan3354(69443)

Question 473699: I am trying to solve this equation and I am having a hard time with it... x^-1 + 3/(x+2) = 8 1/2 solve for x
Click here to see answer by Edwin McCravy(20060)

Question 473735: show all work using the 5-step method to solve:
a sailboat travels 20 miles downstream in 4 hours. it returns in 5 hours. find the speed of the sailboat in still water and the rate of the current.
Click here to see answer by ccs2011(207)

Question 476535: 3/2 x - 4/9=
i need help with this please
Click here to see answer by unlockmath(1688)

Question 476459: Let f(x)=x-2/x-1.
What is f(s)+f(r)?
Click here to see answer by Tatiana_Stebko(1539)

Question 476455: How would I simplify x^2x^negative3y/z^negative4?
Click here to see answer by Tatiana_Stebko(1539)

Question 477200: 3+4[[1/2]-[3/4]] thank you!! will give beautiful review

soooo confusing i tried working it out and got the answer of 2 or 2/1 but im not sure if its correct thanks
Click here to see answer by jim_thompson5910(35256)

Question 479367: is -0.511 greater than -0.51
Click here to see answer by wilft1(217)

Question 479367: is -0.511 greater than -0.51
Click here to see answer by MathLover1(20850)

Question 479654: Evaluate
8-10x+x^2 for x=5
Click here to see answer by nerdybill(7384)

Question 479664: -5/12*-6
Click here to see answer by Alan3354(69443)

Question 479681: If A = -W/T + L, solve for W
Click here to see answer by nerdybill(7384)

Question 480677: If a=-2 and b=16, then a^0 b^1/2 + a^-2 b^-1/2 is equal to...
A. -3/6 B. 1/32 C. 1/16 D. 65/16 E. 257/32
Click here to see answer by stanbon(75887)

Question 480789: I am having trouble solving this problem.
Factor and simplify:

Can you help me solve it?
Click here to see answer by mananth(16946)

Question 483882: 5.04+7.1
Click here to see answer by Alan3354(69443)

Question 485511: x^2/3-4x^1/3-5=0
Solve the equation after making the appropriate substituion, whatever that means.
Click here to see answer by Alan3354(69443)

Question 485898: help me solve this problem -5(2y+5)+20

Click here to see answer by jim_thompson5910(35256)

Question 486087: -12(4/3x-1)
1/3(12-6r)
6(1/2-2/3y)
Click here to see answer by rfer(16322)

Question 486231: how do you solve 4 1/3 - 1 5/6 those are both mixed fractions
Click here to see answer by Tatiana_Stebko(1539)

Question 486803: 2^-3/2^4
Click here to see answer by chessace(471)

Question 486841: please can you explain the following equation:
3/b^2 X 1/2a^3/2b^1/2 I cannot seems to equate the denomoniator
Regards
Keith
Click here to see answer by chessace(471)

Question 489773: It's been a while and have forgotten the rules.
Solve for X
1/100000 + 1/X = 10000
Click here to see answer by stanbon(75887)

Question 489773: It's been a while and have forgotten the rules.
Solve for X
1/100000 + 1/X = 10000
Click here to see answer by chessace(471)

Question 489797: when dividing exponents with the bases of negative powers what do i do?
example-
5^-1/10
Click here to see answer by chessace(471)

Question 490406: Simplify using the products-to-powers rule. (-3x^-2)^-3

Click here to see answer by emargo19(101)

Question 490812: (-9x)^-2
Shouldn't it be 81x?
Click here to see answer by jim_thompson5910(35256)

Question 491772: Negative 5\3 + 3\8 = ?
Click here to see answer by rfer(16322)

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