Question

Solve: x^2 - 12x + 20 = 0

x = 10, -2

x = 10, 2

x = -10, -2

x = -10, 2

Answer 1

you need two numbers to multiply to 20, but add to -12
any ideas?

Answer 2

-10,2

Answer 3

-10 * 2 = -20, not 20

Answer 4

you need a positive 20

Answer 5

10,-2?

Answer 6

10 * -2 still = -20

Answer 7

(x+10)(x-2)?

Answer 8

nope. try -2 and -10

Answer 9

(x-2)(x-10)?

Answer 10

yes

Answer 11

so it would be
(x-2)(x-10)
x^2-10x-2x-20
x^2-12x-20