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Which option has a linear polynomial whose zero is not positive?
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Answer and explanation
Correct answer: \(x+4\)
In option C, the polynomial is \(x+4\). From \(x+4=0\), its zero is \(x=-4\). Since \(-4\) is not positive, C is correct. In contrast, the zero of \(x-5\) is \(5\), which is positive. Exam tip: the zero of \(ax+b\) is \(-\frac{b}{a}\).
Frequently asked questions
What is the correct answer to this question?
\(x+4\)
Why is this the correct answer?
In option C, the polynomial is \(x+4\). From \(x+4=0\), its zero is \(x=-4\). Since \(-4\) is not positive, C is correct. In contrast, the zero of \(x-5\) is \(5\), which is positive. Exam tip: the zero of \(ax+b\) is \(-\frac{b}{a}\).
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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