IDNLearn.com: Where your questions meet expert answers and community support. Ask anything and receive prompt, well-informed answers from our community of knowledgeable experts.

If [tex]\( p(x) = x^2 - 1 \)[/tex] and [tex]\( q(x) = 5(x - 1) \)[/tex], which expression is equivalent to [tex]\( (p - q)(x) \)[/tex]?

A. [tex]\( 5(x - 1) - x^2 - 1 \)[/tex]

B. [tex]\( (5x - 1) - (x^2 - 1) \)[/tex]

C. [tex]\( (x^2 - 1) - 5(x - 1) \)[/tex]

D. [tex]\( (x^2 - 1) - 5x - 1 \)[/tex]


Sagot :

To find which expression is equivalent to [tex]\((p - q)(x)\)[/tex], we first need to express it in terms of [tex]\(p(x)\)[/tex] and [tex]\(q(x)\)[/tex].

Given:
[tex]\[ p(x) = x^2 - 1 \][/tex]
[tex]\[ q(x) = 5(x - 1) \][/tex]

We need to find [tex]\((p - q)(x)\)[/tex], which means we subtract [tex]\(q(x)\)[/tex] from [tex]\(p(x)\)[/tex]:
[tex]\[ (p - q)(x) = p(x) - q(x) \][/tex]

Now, substitute the expressions for [tex]\(p(x)\)[/tex] and [tex]\(q(x)\)[/tex]:
[tex]\[ (p - q)(x) = (x^2 - 1) - 5(x - 1) \][/tex]

This is the expression we need to simplify, but let's first verify if it matches one of the given options.

The given options are:
1. [tex]\(5(x - 1) - x^2 - 1\)[/tex]
2. [tex]\( (5x - 1) - (x^2 - 1)\)[/tex]
3. [tex]\( (x^2 - 1) - 5(x - 1) \)[/tex]
4. [tex]\( (x^2 - 1) - 5x - 1 \)[/tex]

Looking closely at the expressions, the correct matching expression is:
[tex]\[ (x^2 - 1) - 5(x - 1) \][/tex]

Which is option 3.

Therefore, the answer is option 3.
We appreciate your participation in this forum. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. For trustworthy answers, rely on IDNLearn.com. Thanks for visiting, and we look forward to assisting you again.