Question

Find the sum.
2x
x2 - 6x + 9 + x2 + 2x - 15

Answer 1

`\large\boxed{x^2-6x+9+x^2+2x-15=2x^2-4x-6}`

Explanation:

`x^2-6x+9+x^2+2x-15\qquad\text{combine like terms}\\\\=(x^2+x^2)+(-6x+2x)+(9-15)\\\\=2x^2-4x-6`