# How do you factor #4p ^ { 2} - 16p - 84#?

##### 2 Answers

Jul 18, 2017

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#### Explanation:

I used difference of squares identity.

Jul 18, 2017

#### Explanation:

Given:

#4p^2-16p-84#

Note that all of the coefficients are divisible by

The remaining quadratic is monic (leading coefficient

#4p^2-16p-84 = 4(p^2-4p-21)#

#color(white)(4p^2-16p-84) = 4(p-7)(p+3)#