Question

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

x=8

x equals 8

x=8
, x=−2

x equals 8 , x equals negative 2

x=8
, x=−8

x equals 8 , x equals negative 8

x=−2

x equals negative 2
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Answer 1

Use the quadratic formula x = [6 ± sqrt(36 + 64)]/2 = [6 ± sqrt(100)]/2 = [6 ± 10]/2.
So x = 8 or x = −2.