Question

factor completely x^2 – 8x + 15

Answer 1

(x-3)(x-5)

Answer 2

x * y = 15
x + y = -8

What are 'x' and 'y'?

Answer 3

You have to find what two numbers add up to -8 and when multiplied you get 15

Answer 4

thank you. But for this problem what it would be a2 – 5a – 20 ?

Answer 5

For a2 - 5a - 20 it would be easier to plug into quadratic formula