Question 265275
Find all zeros of P(x)= x^2+3x^2-4x-12

We need to solve:

x^2 + 3x^2 - 4x - 12 = 0

Collecting terms we have;
4x^2 - 4x - 12 = 0

Divide both sides by 4:

x^2 - x - 3 = 0

Use the quadratic formula where a=1, b= -1, c= -3 to solve for x.