If (p(x)=6x-7), what is (p(5))?
Answer and explanation
Correct answer: 23
Given \(p(x)=6x-7\), substitute \(x=5\): \(p(5)=6\times5-7=30-7=23\). Option 30 is only the product \(6\times5\); the subtraction of 7 has not been done. Exam tip: To find the value of a polynomial, substitute the given value for every \(x\) and follow the correct order of operations.
Frequently asked questions
What is the correct answer to this question?
23
Why is this the correct answer?
Given \(p(x)=6x-7\), substitute \(x=5\): \(p(5)=6\times5-7=30-7=23\). Option 30 is only the product \(6\times5\); the subtraction of 7 has not been done. Exam tip: To find the value of a polynomial, substitute the given value for every \(x\) and follow the correct order of operations.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Linear polynomials.
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