simplify and show me how

Question

1) 2x^2+8-4x+3x-6x^2+7

2)3x^2+5x-7x+3-5x^2+2

Answer 1

1) Simplifying 2x^2-6x^2+3x-4x+8+7, we get -4x^2-x+15.

2) Simplifying 3x^2-5x^2-7x-5x+3+2, we get -2x^2-12x+5.