Ax^2 + Bx + C
A = 1
B = -12
C = 36
Find two numbers that add to B and multiply to C
-6 + -6 = -12
-6 * -6 = 36
Rewrite equation by replacing B with the two numbers:
x^2 - 6x - 6x + 36
Now factor:
x^2 - 6x - 6x + 36
=(x^2 - 6x) + (- 6x + 36)
=x(x-6) + -6(x-6)
=(x-6)(x + -6)
(X-6)(x-6)
B
