Question

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

Answer 1

`x^2 + 3x + 2`

Explanation:

Rule of FOILING

`(a + b)(c + d) = ac + ad+bc+bd`

Method (FOILING)

`(x+1)(x+2) = (x)(x)+(x)(2)+(1)(x)+(2)(1)`

`x^2 + 2x + x + 2`

`x^2 + 3x + 2`