Question

Factor out the GCF, then solve the following expression.

Answer 1

Answer:

D {-7, 0}

Step-by-step explanation:

3x^2 = 3*x*x

21x = 3*7*x

The greatest common factor is 3x

3x(x+7) =0

Using the zero product property

3x=0  x+7 =0

x=0    x+7-7 =0-7

x=0     x=-7

Answer 2

Answer:

D {-7, 0}

Step-by-step explanation:

The GCF is 3x

3x(x+7) = 0

x = {-7, 0}