Answer:expand?
Step-by-step explanation:
Answer:
=3x2−x−9
Let's simplify step-by-step.
=3x^2+4x−2−(5x+7)
=3x^2+4x+−2+−1(5x)+(−1)(7)
=3x^2+4x+−2+−5x+−7
Combine Like Terms:
=(3x^2)+(4x+−5x)+(−2+−7)
=3x^2+−x+−9
=3x^2−x−9
