Question

Find the GCF of the expression. 3a²+9 A. 3 B. a C. a+3 D. 3a

Answer 1

Option A

The GCF of the expression $3 a^{2}+9$ is 3

Solution:

Need to find GCF of the expression $3 a^{2}+9$

Since only one expression is given it means we need to find G.C.F between two terms

Two terms are $3a^2$ and 9.

On factorizing each term we get

$\begin{aligned} 3 a^{2} &=3 \times a \times a \\ 9 &=3 \times 3 \end{aligned}$

So greatest common factor between two term is 3.

so expression can be rewritten as $3\left(a^{2}+3\right)$

GCF of the terms in an expression helps us in factorization of the expression.

Required solution of G.C.F of expression $3 a^{2}+9$ is option A. that is 3

Answer 2

Answer:

3

Step-by-step explanation:

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