If (p(x)=12-5x), what is the value of (p(2))?
Answer and explanation
Correct answer: 2
Given \(p(x)=12-5x\). Substituting \(x=2\), \(p(2)=12-5(2)=12-10=2\). Hence, the correct answer is 2. The number 5 is only the coefficient; the entire expression must be evaluated after substituting \(x=2\). Exam tip: When evaluating a polynomial, substitute the given value in brackets and perform multiplication before subtraction.
Frequently asked questions
What is the correct answer to this question?
2
Why is this the correct answer?
Given \(p(x)=12-5x\). Substituting \(x=2\), \(p(2)=12-5(2)=12-10=2\). Hence, the correct answer is 2. The number 5 is only the coefficient; the entire expression must be evaluated after substituting \(x=2\). Exam tip: When evaluating a polynomial, substitute the given value in brackets and perform multiplication before subtraction.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Linear polynomials.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
