Factorise x squared - 12x + 36

(x-6) (x-6) or (x-6) ^2

Step-by-step explanation:

x^2-12x+36 = (x-6) (x-6)

Just find two numbers that when they multiply, you get the third term,

which is 36 in this case. And when they add up, you get the second term,

which is - 12 in this case. You can also check the answer by multiplying.

(x-6) (x-6) = x^2-6x-6x+36=x^2-12x+36