Question

Simplify the following differences of polynomials completely ( - 12z raise to power 2 + 8z - 15) - (4z raise to power 2 + 13)

Answer 1

Given :

`(-12z^2+8z-15)-(4z^2+13)`

Take the minus sign inside the bracket.

`=-12z^2+8z-15-4z^2-13`

Solve like terms, like terms are terms that contain the same variables with the same power.

`=-12z^2-4z^2+8z-15-13`

`=-16z^2+8z-28`

Hence the answer is

`(-12z^2+8z-15)-(4z^2+13)=-16z^2+8z-28`