Jasmin C.

# I don't understand :/ ?

So the problem I have is (x-4)2/3=100. I used the "help me solve this" feature and it gave me:

((x-4)2/3)3/2=+-(100)3/2

and that gave me:

x-4=+-1000

I know how you got x-4 by multiplying by the reciprocal and it cancels them out but how do you get 1000 from (100)3/2 ?

another question gave me:

((x-1)2/3)3/2 =+-(81)3/2

and it equaled:

x-1=729

I just don't understand what you have to do to solve the right side of the equation.

Aman A.

tutor
(100)3/2=(1001/2)3=(√100)3=(10)3=1000
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10/05/15

## 5 Answers By Expert Tutors

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Art V.

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It's x =-996 not -9996th.
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10/05/15

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