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If \(2\) is a zero of the polynomial \(p(x)=kx^2-5x+6\), what is the value of \(k\)?

Answer and explanation

Correct answer: 1

For a zero \(\alpha\) of a polynomial, \(p(\alpha)=0\). Thus, \(p(2)=4k-10+6=0\), which gives \(4k-4=0\) and hence \(k=1\). Therefore, option A is correct. In such questions, substitute the given zero into the polynomial and set the result equal to zero.

Related tags

PolynomialsZeros Of PolynomialPolynomial EquationsQuadratic PolynomialPolynomials In One VariableMathematicsClass 10 Mcq

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