Question

Using the quadratic formula, find the solution to x^2−6x−16=0
.(1 point)
Responses

x=−2
x equals negative 2

x=8
, x=−2
x equals 8 , x equals negative 2

x=8
, x=−8
x equals 8 , x equals negative 8

x=8

Answer 1

Use the quadratic formula x = [6 ± sqrt(36 + 64)]/2 = [6 ± 10]/2, so x = (6+10)/2 = 8 or x = (6−10)/2 = −2.

Answer: x = 8, x = −2.