Question

1. -6x + 5 + 12x -6

2. 2(x - 9) + 6(-x + 2) + 4x

3. 3x2 + 12 + 9x - 20 + 6x2 - x

Answers:
1.6x - 1
2.-6
3.9x2 + 8x - 8

Answer 1

correct

write the square terms like this:

9x^2...