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What is the factored form of [tex]\(8x^2 + 12x\)[/tex]?

A. [tex]\(4(4x^2 + 8x)\)[/tex]

B. [tex]\(4x(2x + 3)\)[/tex]

C. [tex]\(8x(x + 4)\)[/tex]

D. [tex]\(8x(x^2 + 4)\)[/tex]


Sagot :

To find the factored form of the expression [tex]\( 8x^2 + 12x \)[/tex], let's follow these steps:

1. Identify the Greatest Common Factor (GCF):
We start by identifying the GCF for the terms in the given expression. The expression is [tex]\( 8x^2 + 12x \)[/tex].

- The coefficients are 8 and 12. The GCF of 8 and 12 is 4.
- The variable part is [tex]\( x^2 \)[/tex] and [tex]\( x \)[/tex]. The GCF here is [tex]\( x \)[/tex].

Thus, the GCF of the entire expression is [tex]\( 4x \)[/tex].

2. Factor Out the GCF:
Now we factor out [tex]\( 4x \)[/tex] from each term in the expression:

[tex]\[ 8x^2 + 12x = 4x( \frac{8x^2}{4x} + \frac{12x}{4x} ) \][/tex]

Simplifying each term inside the parentheses:

- [tex]\(\frac{8x^2}{4x} = 2x \)[/tex]
- [tex]\(\frac{12x}{4x} = 3 \)[/tex]

So, we have:

[tex]\[ 8x^2 + 12x = 4x(2x + 3) \][/tex]

3. Verify with Given Options:
We should now verify the correct matching option:

Option 1: [tex]\(4(4x^2 + 8x)\)[/tex] \\
Option 2: [tex]\(4x(2x + 3)\)[/tex] \\
Option 3: [tex]\(8x(x + 4)\)[/tex] \\
Option 4: [tex]\(8x(x^2 + 4)\)[/tex]

From our factorization, [tex]\( 4x(2x + 3) \)[/tex] exactly matches Option 2.

Hence, the factored form of [tex]\( 8x^2 + 12x \)[/tex] is [tex]\( \boxed{4x(2x + 3)} \)[/tex] which corresponds to option 2.