Question

Solve the quadratic equation 84x2+16x=0
by factoring out the GCF.(1 point)
Responses

The solutions are x=−421
and x=0
.
The solutions are x equals negative Start Fraction 4 over 21 End Fraction and x equals 0 .

The solutions are x=0
and x=4
.
The solutions are x equals 0 and x equals 4 .

The solutions are x=−4
and x=−421
.
The solutions are x equals negative 4 and x equals negative Start Fraction 4 over 21 End Fraction .

The solutions are x=0
and x=421
.

Answer 1

Factor: 84x^2 + 16x = 4x(21x + 4) = 0.
So 4x = 0 → x = 0, or 21x + 4 = 0 → x = −4/21.

Answer: x = −4/21 and x = 0.