Question

What is `-3y^4*3y^4`?

Answer 1

`-3y^4xx3y^4=color(blue)(-9y^8)`

Explanation:

Multiply the numerical coefficients.

`-3xx3=-9`

Since the variables (`y`) are the same, add the exponents.

`y^4xxy^4=y^(4+4)=y^8`

Put the terms together.

`-9y^8`