Which option has zero (3) for a linear polynomial?
Answer and explanation
Correct answer: \(x-3\)
A zero of a polynomial is a value that makes the polynomial equal to 0. Substituting \(x=3\) in \(x-3\) gives \(3-3=0\), so its zero is 3. In contrast, \(x+3\) has zero \(-3\), not 3. Exam tip: Substitute the given value in the polynomial and check whether the result is 0.
Frequently asked questions
What is the correct answer to this question?
\(x-3\)
Why is this the correct answer?
A zero of a polynomial is a value that makes the polynomial equal to 0. Substituting \(x=3\) in \(x-3\) gives \(3-3=0\), so its zero is 3. In contrast, \(x+3\) has zero \(-3\), not 3. Exam tip: Substitute the given value in the polynomial and check whether the result is 0.
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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