Welcome to Westonci.ca, where curiosity meets expertise. Ask any question and receive fast, accurate answers from our knowledgeable community. Join our platform to connect with experts ready to provide precise answers to your questions in different areas. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

Given the following functions, find and simplify [tex]\((f \cdot g)(x)\)[/tex].

[tex]\[
\begin{array}{l}
f(x) = -3x + 2 \\
g(x) = -x + 1
\end{array}
\][/tex]

Provide your answer below:


Sagot :

To find and simplify the product [tex]\((f \cdot g)(x)\)[/tex] of the given functions [tex]\(f(x)\)[/tex] and [tex]\(g(x)\)[/tex], we follow these steps:

1. Define the functions:
[tex]\[ f(x) = -3x + 2 \][/tex]
[tex]\[ g(x) = -x + 1 \][/tex]

2. Form the product of the functions:
The product [tex]\((f \cdot g)(x)\)[/tex] is given by multiplying [tex]\(f(x)\)[/tex] and [tex]\(g(x)\)[/tex]:
[tex]\[ (f \cdot g)(x) = f(x) \cdot g(x) = (-3x + 2) \cdot (-x + 1) \][/tex]

3. Expand the product:
Use the distributive property to expand the product:
[tex]\[ (-3x + 2) \cdot (-x + 1) \][/tex]
Distribute each term in the first binomial by each term in the second binomial:
[tex]\[ = (-3x) \cdot (-x) + (-3x) \cdot 1 + 2 \cdot (-x) + 2 \cdot 1 \][/tex]

4. Calculate each term:
[tex]\[ = 3x^2 + (-3x) + (-2x) + 2 \][/tex]

5. Combine like terms:
Combine the [tex]\( -3x \)[/tex] and [tex]\( -2x \)[/tex] terms:
[tex]\[ = 3x^2 - 5x + 2 \][/tex]

Thus, the product [tex]\((f \cdot g)(x)\)[/tex] before and after simplification is:

[tex]\[ (f \cdot g)(x) = (1 - x)(2 - 3x) \][/tex]

And when simplified:

[tex]\[ (f \cdot g)(x) = (x - 1)(3x - 2) \][/tex]

Hence, the fully simplified expression for [tex]\((f \cdot g)(x)\)[/tex] is:
[tex]\[ (f \cdot g)(x) = 3x^2 - 5x + 2 \][/tex]