Question

Find the difference of (−5x^2 − 4x^3 − 3) − (9x^3 + 3x − 8x^2).

Answer 1

First remove the parenthesis:
−5x^2 − 4x^3 − 3 − 9x^3 − 3x + 8x^2
Then combine all the like terms so it will look like this:
(−4 − 9)x^3 + (−5 + 8)x^2 − 3x − 3
And then you get your answer:
−13x^3 + 3x^2 − 3x − 3