Question

2x^2 + 5x - 12 solve this expression

Answer 1

x=3/2, x=-4

Explanation:

2x^2 + 5x - 12

First lets see if we can factor this

(2x ) ( x )

-12 = -1*12 1*-12

- 2*6 2 * -12

- 3*4 3 * -4

2 * one of these pairs - the other pair = +5

2*4 -3 = 5

Put the -3 in the first spot and the 4 in the second spot

(2x-3) ( x+4)

Using the zero product property

2x-3 =0 x+4=0

2x=3 x=-4

x = 3/2