Which option has zero (-10) for a linear polynomial?
Answer and explanation
Correct answer: \(x+10\)
A zero of a polynomial is a value that makes the polynomial equal to 0. Substituting \(x=-10\) in \(x+10\) gives \(-10+10=0\), so its zero is \(-10\). The close distractor \(x-10\) has zero \(10\), not \(-10\). Exam tip: the zero of \(x+a\) is \(-a\), while the zero of \(x-a\) is \(a\).
Frequently asked questions
What is the correct answer to this question?
\(x+10\)
Why is this the correct answer?
A zero of a polynomial is a value that makes the polynomial equal to 0. Substituting \(x=-10\) in \(x+10\) gives \(-10+10=0\), so its zero is \(-10\). The close distractor \(x-10\) has zero \(10\), not \(-10\). Exam tip: the zero of \(x+a\) is \(-a\), while the zero of \(x-a\) is \(a\).
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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