Question

x2 − 8x − 20 = 0

Answer 1

if you are solving this....
you could factor it

(x )(x ) what are two numbers that when multiplied the = -20
but when you subtact them you get -8

Answer 2

start with finding numbers that mult to get 20... what are some?

Answer 3

1 * 20
2 * 10
4 * 5

These all = 20 , which pair can be subtracted to get -8/