Factor out the GCF, then solve the following expression.

3x² + 21x = 0

A {0, 24}

B {-7, 3}

C {0, 7}

D {-7, 0}

Question

Mathematics

Frank Dunn

21 November, 17:39

Factor out the GCF, then solve the following expression.

3x² + 21x = 0

A {0, 24}

B {-7, 3}

C {0, 7}

D {-7, 0}

+2

Answers (2)

Know the Answer?

Corey Pittman · Answer 1

D {-7, 0}

Step-by-step explanation:

The GCF is 3x

3x (x+7) = 0

x = {-7, 0}

Nylah Sullivan · Answer 2

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

Factor out the GCF, then solve the following expression.3x² + 21x = 0A {0, 24}B {-7, 3}C {0, 7}D {-7, 0}

Factor out the GCF, then solve the following expression.

3x² + 21x = 0

A {0, 24}

B {-7, 3}

C {0, 7}

D {-7, 0}