Question

Is it possible to factor `y=x^2 -6x+8`? If so, what are the factors?

Answer 1

(x - 2)(x - 4)

Explanation:

Find 2 numbers knowing (sum = b = -6) and product (c = 8).
Factor pairs of (8) --> (2, 4). This sum is 6 = -b. The opposite sum
(-2, -4) gives the 2 numbers: -2, and -4
Factored form: y = (x - 2)(x - 4)