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

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Question 466440: (5-9)^2+2
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(7-8)^2*3^2

Click here to see answer by Scorinitron(19) About Me 

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) About Me 

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) About Me 

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

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) About Me 

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

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

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) About Me 

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

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) About Me 

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) About Me 

Question 471085: x + bx/c = a
? x = >>>

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

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) About Me 

Question 473536: Simplify by factoring.
√180x^4=__

Click here to see answer by stanbon(75887) About Me 

Question 473692: Subtract and simplify, if possible: 1-v/v-6 - 3v-2/6-v
Divide: 8/x divided by 64/x

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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) About Me 
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) About Me 

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) About Me 
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 ewatrrr(24785) About Me 
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 Alan3354(69443) About Me 

Question 476535: 3/2 x - 4/9=
i need help with this please

Click here to see answer by unlockmath(1688) About Me 

Question 476459: Let f(x)=x-2/x-1.
What is f(s)+f(r)?

Click here to see answer by Tatiana_Stebko(1539) About Me 

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

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) About Me 

Question 479367: is -0.511 greater than -0.51
Click here to see answer by wilft1(217) About Me 
Question 479367: is -0.511 greater than -0.51
Click here to see answer by MathLover1(20850) About Me 

Question 479654: Evaluate
8-10x+x^2 for x=5

Click here to see answer by nerdybill(7384) About Me 

Question 479664: -5/12*-6
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Question 479681: If A = -W/T + L, solve for W
Click here to see answer by nerdybill(7384) About Me 

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) About Me 

Question 480789: I am having trouble solving this problem.
Factor and simplify:
+%28x%28x-1%29%5E%28-1%2F2%29%29+%2B+%282%28x-1%29%5E%281%2F2%29%29+
Can you help me solve it?

Click here to see answer by mananth(16946) About Me 

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

Question 485511: x^2/3-4x^1/3-5=0
Solve the equation after making the appropriate substituion, whatever that means.

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


Click here to see answer by jim_thompson5910(35256) About Me 

Question 486087: -12(4/3x-1)
1/3(12-6r)
6(1/2-2/3y)

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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) About Me 

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

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) About Me 

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) About Me 
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) About Me 

Question 489797: when dividing exponents with the bases of negative powers what do i do?
example-
5^-1/10

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

Click here to see answer by emargo19(101) About Me 

Question 490812: (-9x)^-2
Shouldn't it be 81x?

Click here to see answer by jim_thompson5910(35256) About Me 

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