Select the correct answer.

Which expression in factored form is equivalent to this expression?

[tex]\[ 4(x^2 - 2x) - 2(x^2 - 3) \][/tex]

A. \((2x - 3)(x + 1)\)

B. \(2(x + 1)(x + 3)\)

C. \(2(x - 1)(x - 3)\)

D. [tex]\((2x + 3)(x + 1)\)[/tex]



Answer :

To find the factored form of the given expression, we start with the expression:

[tex]\[ 4(x^2 - 2x) - 2(x^2 - 3) \][/tex]

Let's proceed step by step to simplify and factor the expression.

Step 1: Distribute the constants inside the parentheses.

[tex]\[ 4(x^2 - 2x) = 4x^2 - 8x \][/tex]
[tex]\[ -2(x^2 - 3) = -2x^2 + 6 \][/tex]

Step 2: Combine these two expressions.

[tex]\[ 4x^2 - 8x - 2x^2 + 6 \][/tex]

Step 3: Simplify the combined expression by combining like terms.

[tex]\[ (4x^2 - 2x^2) + (-8x) + 6 = 2x^2 - 8x + 6 \][/tex]

Step 4: Factor the expression \(2x^2 - 8x + 6\).

First, we factor out the greatest common factor (GCF), which is 2:

[tex]\[ 2(x^2 - 4x + 3) \][/tex]

Now, we need to factor the quadratic expression inside the parentheses:

[tex]\[ x^2 - 4x + 3 \][/tex]

To factor \(x^2 - 4x + 3\), we need to find two numbers that multiply to \(3\) (the constant term) and add to \(-4\) (the coefficient of \(x\)).

These two numbers are \(-1\) and \(-3\) because:

[tex]\[ -1 \cdot (-3) = 3 \quad \text{and} \quad -1 + (-3) = -4 \][/tex]

So, the expression \(x^2 - 4x + 3\) can be factored as:

[tex]\[ (x - 1)(x - 3) \][/tex]

Putting it all together, we have:

[tex]\[ 2(x - 1)(x - 3) \][/tex]

Thus, the factored form of the original expression is:

[tex]\[ 2(x - 1)(x - 3) \][/tex]

So, the correct answer is:

C. [tex]\(2(x-1)(x-3)\)[/tex]