Answer:
=5x^2+4x−5
Step-by-step explanation:
Let's simplify step-by-step.
3x2−5x+1+2x2+9x−6
=3x2+−5x+1+2x2+9x+−6
Combine Like Terms:
=(3x2+2x2)+(−5x+9x)+(1+−6)
=5x2+4x+−5
