Question

Which quadratic equations have two solutions? Check all that apply.

y = x^2 + 3

y = x^2 - 8x - 20

y = x^2 - 25

y = 4x^2 + 12x + 9

y = -x^2 + 2x - 1

y = -2x^2 - 5x - 4

Answer 1

y = x^2 - 8x - 20 where x= -2 and 10

y = x^2 - 25 where x= -5 and 5