Question

How do you factor `4g ^ { 2} - 40g + 36`?

Answer 1

`(4g-36) (g-1)`

Explanation:

Find factors of `4` that when cross multiplied to the factors of `36` will equal to `-40`.

For example,

`4" " -36`

`1" " -1`

When you cross multiply `-1` and `4` to get `-4`. Then cross multiply `1` and `-36` to get `-36`. Once you add them, you get `-40`.