Question

How do you combine `(6x^2 + x + 4) - (x^2 - x + 9)`?

Answer 1

`(6x^2 + x + 4) - (x^2 - x + 9)`

`6x^2 + x + 4- color(red)(x^2) + color(blue)( x) -color(green)( 9`

We can Group Like Terms to combine the expressions

`(6x^2 - color(red)(x^2)) + (x + color(blue)( x)) +(4-color(green)( 9))`

`= 5x^2 + 2x -5`