Question

Find the difference of
(−5x^2 − x^3 − 3) − (9x^3 + 3x − 6x^2).

Answer 1

this is a subtraction polynomial problem....my first step would be to change it to a addtion problem...which is easier ( I think...)
They to do that is write a 1 next to the negative sign and mulitply everything in the 2nd set of ( )"s by negative one.

Answer 2

then ignore all the parentheses and combine like terms