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Which linear polynomial becomes (0) at (x=-2)?
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Answer and explanation
Correct answer: x+2
On substituting x=-2, we get x+2=(-2)+2=0. Hence, -2 is a zero of x+2, so option C is correct. For example, substituting -2 in x-2 gives -4, not 0. Exam tip: To check whether a number is a zero of a polynomial, substitute it and see whether the value obtained is 0.
Frequently asked questions
What is the correct answer to this question?
x+2
Why is this the correct answer?
On substituting x=-2, we get x+2=(-2)+2=0. Hence, -2 is a zero of x+2, so option C is correct. For example, substituting -2 in x-2 gives -4, not 0. Exam tip: To check whether a number is a zero of a polynomial, substitute it and see whether the value obtained 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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