Question

For what values of x does each expression make sense?

1. √(-2x)²
2. √(-5x)³

Thanks!

Answer 1

first option?

i’m not completely sure

Answer 2

Answer: first one

Explanation:

For the first one, values of x each expression make sense because the inside of square roots must be positive.

(-2x)² = 4x²

√(-2x)² =√4x² = 2√x²

(-5x)³ = -125x³

√(-5x)³=√-125x³ = 5√-5x³