X squared + 4x-12 factor the expression

X^2 + 4x - 12

u see that last sign in ur problem ... the negative ... thats tells us that ur 2 factors will each have different signs. And u see ur first sign ... the positive ... that tells us that ur larger number will be positive. Now we have to find 2 numbers, then when added = 4 and when multiplied = - 12.

6 and - 2 are ur numbers ...

so when factored, it is : (x + 6) (x - 2) <==