SOLUTION: Can you please help me understand this problem? Evaluate: xy^-2/3 for x=2 y=8 2*1/cuberoot8^2 2*1/2 cuberoot2 I am lost at this point and it does not make sense to me.

Algebra ->  Rational-functions -> SOLUTION: Can you please help me understand this problem? Evaluate: xy^-2/3 for x=2 y=8 2*1/cuberoot8^2 2*1/2 cuberoot2 I am lost at this point and it does not make sense to me.       Log On


   



Question 295313: Can you please help me understand this problem?
Evaluate:
xy^-2/3 for x=2 y=8
2*1/cuberoot8^2
2*1/2 cuberoot2
I am lost at this point and it does not make sense to me.
Thank you for your help.
Tina


Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Can you please help me understand this problem?
Evaluate:
xy^-2/3 for x=2 y=8
Sub 2 for x and 8 for y
= 2%2A%288%5E%28-2%2F3%29%29
2 is the cube root of 8
= 2%2A2%5E%28-2%29
= 2%2F2%5E2
= 2/4
= 1/2
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