Question

Simplify the following: -(3z)²

Answer 1

We have the following general rule for exponents:

`(a\cdot b)^n=a^n\cdot b^n`

Then, in this case we have:

`-(3z)^2=-(3^2\cdot z^2)=-9z^2`

therefore, the simplifed expression is -9z²