Question

What is this expression in factored form?
x^2+13x+42

Answer 1

Answer and explanation:

`x^(2) + 13x + 42`

(x + 6)(x + 7)

List the multiples of 42

42: 1 2 3 6 7 14 21 42

Then see which of the multiples add up to 13

1 x 42 = 42 --> 1 + 42
`\\eq` 13

2 x 21 = 42 --> 2 + 21
`\\eq` 13

3 x 14 = 42 --> 3 + 14
`\\eq` 13

6 x 7 = 42 --> 6 + 7 = 13