Answer:
Step-by-step explanation:
3x^2 + 7x + 9x^2 - 3x + 2
3x^2 + 9x^2 + 7x - 3x + 2
12x^2 + 7x - 3x + 2
Answer: 12x^2 + 4x + 2
This should be correct unless i'm dumb...
