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Which linear polynomial becomes (0) at (x=3)?

Answer and explanation

Correct answer: \(x-3\)

On substituting \(x=3\), we get \(x-3=3-3=0\). Hence, 3 is a zero of \(x-3\), so it is the correct linear polynomial. In contrast, \(x+3\) gives 6 at \(x=3\), not zero. Exam tip: To check whether a number is a zero of a polynomial, substitute it and verify that the value is 0.

Related tags

PolynomialsLinear PolynomialsZeros Of PolynomialsSubstitutionClass 9 MathematicsIntroduction To PolynomialsMathematicsClass 9 Mcq

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