Question

How do you factor x^2 + 8x + 7?

Answer 1

`(x+1)(x+7)`

Explanation:

Quadratic equation: `ax^2+bx+c rarr` Here, `a` is `1`, `b` is `8` and `c` is `7`

Find two numbers that multiply to `c` (`7`) and add to `b` (`8`):

`7*1=7`

`7+1=8`

The two numbers are `7` and `1`:

`(x+7)(x+1)`