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If the zero of (p(x)=(c-2)x+4c) is (-4), which conclusion is correct?

Answer and explanation

Correct answer: No such \(c\) exists

If \(-4\) is a zero of \(p(x)\), then \(p(-4)=0\). Thus, \((c-2)(-4)+4c=0\). On simplifying, \(-4c+8+4c=0\), which gives \(8=0\), an impossibility. Hence, no value of \(c\) can make \(-4\) a zero of this polynomial. Exam tip: To test a given zero \(a\), always substitute it and use \(p(a)=0\).

Related tags

PolynomialsLinear PolynomialsZeros Of PolynomialsSubstitutionAlgebraic ContradictionIntroduction To PolynomialsMathematicsClass 9 Mcq

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