Question

Determine whether the values −1
and 73
are solutions to the quadratic equation 3x2−4x−4=3
.(1 point)

Both x=−1
and x=73
are solutions.

Neither x=−1
nor x=73
is a solution.

Only x=−1
is a solution.

Only x=73
is a solution.

Answer 1

Only x = −1 is a solution.

Check: For x = −1, 3(−1)^2 − 4(−1) − 4 = 3 + 4 − 4 = 3, so it works.
For x = 73, 3(73)^2 − 4(73) − 4 = 15691 ≠ 3, so it does not.