Join the growing community of curious minds on IDNLearn.com. Get comprehensive and trustworthy answers to all your questions from our knowledgeable community members.

Select the best answer for the question.

8. Simplify [tex]\((2x+3)(x-4) =\)[/tex] ?

A. [tex]\(2x^2 - 5x + 12\)[/tex]
B. [tex]\(2x^2 + 5x - 12\)[/tex]
C. [tex]\(2x^2 - 5x - 12\)[/tex]
D. [tex]\(2x^2 + 5x + 12\)[/tex]


Sagot :

To simplify the expression [tex]\((2x+3)(x-4)\)[/tex], we can follow these detailed steps:

1. Distribute each term in the first binomial to each term in the second binomial: Use the distributive property (also known as the FOIL method for binomials) to expand the expression.

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

2. Multiply the terms:

- First: Multiply the first terms of each binomial:
[tex]\[ 2x \cdot x = 2x^2 \][/tex]

- Outer: Multiply the outer terms of the binomials:
[tex]\[ 2x \cdot (-4) = -8x \][/tex]

- Inner: Multiply the inner terms of the binomials:
[tex]\[ 3 \cdot x = 3x \][/tex]

- Last: Multiply the last terms of each binomial:
[tex]\[ 3 \cdot (-4) = -12 \][/tex]

3. Combine all the products from the previous step:

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

4. Combine like terms:

[tex]\[ 2x^2 - 8x + 3x - 12 \][/tex]

Combine the [tex]\(x\)[/tex] terms:

[tex]\[ 2x^2 - 5x - 12 \][/tex]

Therefore, the simplified expression is:

[tex]\[ 2x^2 - 5x - 12 \][/tex]

So, the best answer to the given question is:

C. [tex]\(2x^2 - 5x - 12\)[/tex]