Question

*Medal for best answer*
What are the x-intercept(s) of the graph of y + 20 = x2 − x?

(−4, 0) and (−5, 0)

(−4, 0) and (5, 0)

(4, 0) and (−5, 0)

(4, 0) and (5, 0)

Answer 1

@johnweldon1993

Answer 2

x intercepts are at y=0:
0 + 20 = x² - x
x² - x = 20
x² - x - 20 = 0
(x+a)(x+b) = 0

Solve the system:
a + b = -1
a * b = -20