Question

What are the x-intercept(s) of the graph of y + 20 = x2 − x?

A.(−4, 0) and (−5, 0)

B.(−4, 0) and (5, 0)

C.(4, 0) and (−5, 0)

D. (4, 0) and (5, 0)

Answer 1

if you want to know the procedure, then all you need to do is set y=0, then solve the resulting equation for x: \(\large 0+20=x^2-x \)

otherwise, you can just check with each of those choices holds true in the equation...

Answer 2

?

Answer 3

x-intercept = y is 0
20=x^2-x
x^2-x-20=0
(x-5)(x+4)=0
x=5 or x=-4

B

Answer 4

thank you