Question

Factor: x^2-24x+144

Answers:
(x-12)(x+12)
(x-6)(x+24)
(x-12)^2
(x-72)^2

Answer 1

You need to find two numbers whose product is +144 and whose sum is -24. What numbers do you get?

Answer 2

9 and 16?

Answer 3

Their product is +144 but their sum is 25 and it needs to be -24. Hint: the product of two negative numbers is positive.

Answer 4

I still get the same thing.. hmm

Answer 5

Keep at it. There are two numbers that multiply to give 144 and add to give -24.

Answer 6

12?