Question

How do you multiply `(2x+1)(x+3)`?

Answer 1

`= 2x^2 +7x +3`

Explanation:

`(2x+1)(x+3)`

`= color(blue)(2x xx (x ) + 2x xx (3)) + color(green)(1 xx (x) + 1 xx (3)`

`= 2x^2 +6x + 1x +3`

`= 2x^2 +7x +3`