# How do you factor completely #12z^2+7z-12#?

##### 2 Answers

May 19, 2018

See below

#### Explanation:

Two alternatives: use quadratic formula or complete square (a little bit complicate in this case). The use of Riffini's method is also available but in this case is not quite evident

**Quadratic formula:**

Then factoring is

May 19, 2018

#### Explanation:

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