NEED HELP ASAP!
A quadratic equation is written in four equivalent forms below.

I. y = x2 - 2x - 8
II. y = (x - 4)(x + 2)
III. y = (x - 1)2 - 9
IV. y = x(x - 2) - 8

Which of the forms shown above would be the most useful if attempting to find the x-intercepts of the quadratic equation?
A. I.
B. III.
C. II.
D. IV.

Question

NEED HELP ASAP!
A quadratic equation is written in four equivalent forms below.

I.	y = x2 - 2x - 8
II.	y = (x - 4)(x + 2)
III.	y = (x - 1)2 - 9
IV.	y = x(x - 2) - 8

Which of the forms shown above would be the most useful if attempting to find the x-intercepts of the quadratic equation?
A. I.
B. III.
C. II.
D. IV.

anonymous · Answer

the x-intercept is where x = 0
So the form where it is easiest to find the zero points
Hence in II, there you can instantly see that x = 4 and x = -2 are zeropoints