Answer:
Step-by-step explanation:
3x2+5x−6−x2+3x+9
=3x2+5x+−6+−x2+3x+9
Combine Like Terms:
=3x2+5x+−6+−x2+3x+9
=(3x2+−x2)+(5x+3x)+(−6+9)
=2x2+8x+3
Answer is: =2x2+8x+3
Answer:
2x^2+8x+3
Step-by-step explanation:
Combine like terms
3x^2+5x+-6+-x^2+3x+9
(3x^2+-x^2)+(5x+3x)+(-6+9)
= 2x^2 + 8x + 3
