Question

Which is true?
If x = y2, which of the following is true?

Answer 1

Option A,
`√(x)=y`

Explanation:

Step 1: Determine which expression is true

Option A

`√(x)=y`

`(√(x))^2=(y)^2`

`x = y^2`

We don't need to go any further. We were able to determine that option A was true by squaring both sides which got rid of the square root around x and gave y another power which produced y^2.

Answer: Option A,
`√(x)=y`