Question

How do you combine `(x^2 + 3x) - (x^2 + x)`?

Answer 1

`= color(blue)(2x)`

Explanation:

`x^2+3x-x^2-x`

Combining like terms
`color(green)(x^2-x^2)+color(blue)(3x-x)`

`= color(green)(0)+color(blue)(3x-x)`

`= color(blue)(2x)`