SOLUTION: A.(square root of x)-1=3 B.(square root of xcubed)=8 C.cubed(square root of xsquared)=4

Algebra ->  Square-cubic-other-roots -> SOLUTION: A.(square root of x)-1=3 B.(square root of xcubed)=8 C.cubed(square root of xsquared)=4      Log On


   

Question 82615: A.(square root of x)-1=3
B.(square root of xcubed)=8
C.cubed(square root of xsquared)=4
Answer by chitra(359) About Me  (Show Source):
You can put this solution on YOUR website!
The given questions are:

A) (square root of x)- 1 = 3

Solution: This can be written as:

sqrt%28x%29 - 1 = 3

Adding one to both sides of the above equation, we get:

sqrt%28x%29 = 3 + 1

sqrt%28x%29+=+4

==> x = %284%29%5E2

==> x = 16


B) (square root of xcubed) = 8

Solution: This can be written as:

sqrt%28x%5E3%29 = 8

==> %28x%5E3%29 = %288%5E2%29

==> %28x%5E3%29 = 64

==> x = %2864%29%5E%281%2F3%29

==> x = 4

Hence, the solution.


C. cubed (square root of x squared) = 4

Solution: The given expresion can be written as:

%28sqrt%28x%5E2%29%29%5E3 = 4


+x%5E3 = 4 (since Sqrt(x^2) = x )


==> x = 4%5E%281%2F3%29

Hence, the solution.

Regards...
Happy calculating :))