What’s the answer to this

A.  x = -5/6  and  x = 1/2.

Step-by-step explanation:

12x^2 + 4x - 5 = 0

Use the 'ac' method to try to factor this:

Consider the above highlighted numbers:

12 * -5 = -60.

Now we need 2 numbers whose product is -60 and whose sum is +4.

They are -6 and +10, so we replace the + 4x by -6x + 10x:

12x^2 - 6x + 10x - 5 = 0   Now factor by grouping:

6x(2x - 2) + 5(2x - 1) = 0   The 2x -1 is common, so:

(6x + 5)(2x - 1) = 0

So x = -5/6  and  x = 1/2.

1

step-by-step explanation:

it's the only multiple of both and the least

step-by-step explanation: