1.18x^2 + 6 + 4x - 15x^2 - 4 + 13x

Question

2. 2x^2 + 8 - 4x + 3x - 6x^2 + 7

Answer 1

18x^2 + 6 + 4x - 15x^2 - 4 + 13x

3x^2 + 17x + 2

Now you try the second problem.