Question

Which of the following are solutions to the equation below?

Check all that apply.
9x^2- 6x + 1 = 7

Answer 1

The answer is C and D

First we must make one side of the equation zero, so we subtract 7 on both sides of the equation, making the equation 9x^2 - 6x - 6 = 0

Then we will use the quadratic formula to find the answers.

using the Quadratic Formula where:

a = 9, b = -6, and c = -6

and the formula is 6 +-
`\sqrt{6^(2) } -4 (9)(6) /2 (9)`