Question

Combine terms 7x3 + 2x - 5x2 + 6 + x + 9 + 3x3 + 12x2

Answer 1

the fellow is correct

Explanation:

I would have done it but without the symbols I can't

Answer 2

10x^3 + 7x^2 + 3x + 15

Explanation:

hope this helps have good day.