Completely factor 12x² - 7x - 12. a. (4x + 3)(3x - 4) b. (12x + 1)(x - 12) c. (12x - 12)(x + 1) d. (4x - 4)(3x + 3)

You can solve this a few ways. You could use the quadratic formula but I am going to use the grouping method.


First find two numbers that equal -12 when you multiply them but also equals -7 when you add them. Two numbers that do just that are -16 and 9

Now use the two numbers and put it in group form




Now factor out the groups



The answer is A

There should only be 1 solution