How to answer 12- ( -5x^2 +x - 7),polynomials

12 - ( -5x^2 +x - 7 how do i answer this? thank you! algebra 1

The only thing we can do is to put out the parenthesis: As it is multiplied by -1... we must change the signals of the terms inside the parents.

12 + 5x^2 -x + 7 = 5x^2 -x + 19 OK!