which two factors of 20 differ by 1?
Those will be the zeros; one plus, one minus.
Find the zeros:
f(x)=x^2 +x-20
2 answers
F(x) = x^2 + x - 20.
x^2 + x - 20 = 0,
(x-4)(x+5) = 0,
x-4 = 0. X =
x + 5 = 0. X =
x^2 + x - 20 = 0,
(x-4)(x+5) = 0,
x-4 = 0. X =
x + 5 = 0. X =