Question

How do you simplify `(2x^8)(-5^7)(4x^5)`?

Answer 1

`-625000x^13`

Explanation:

Simplify `(2x^8)(-5^7)(4x^5)`

Simplify `(-5^7)`

`-5^7=-78125`

Gather like terms.

`2xx4xx-78125xxx^8xxx^5`

Apply exponent rule `a^mxxa^n=a^(m+n)`

`2xx4xx-78125xxx^((5+8))`

Simplify.

`8xx-78125xxx^13`

Simplify.

`-625000x^13`