Question

How do you simplify `(2x^2-8x+1)+(9x^2+4x-1)`?

Answer 1

`=11x^2 - 4x`

Explanation:

`(2x^2-8x+1)+(9x^2+4x-1)`

Grouping like terms
`=color(blue)((2x^2 + 9x^2) + color(green)((-8x + 4x)) + (1-1)`

`=color(blue)(11x^2color(green)(-4x) + 0`