Answer:
3,-4
Explanation:
The only world in which it cannot be a solution is if it makes answer undefined
the only way to do this in this problem is if the denomianator equals 0 (because you can't divide by 0)
so just take each part and solve for 0
in other words
x-3= 0
x+4=0
x²+x-12=0
Solve for x
3,-4