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Class 10MathematicsPolynomialsPolynomials in one variableExpert
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If (p(x)=kx^3+2x^2-7x+5) and (p(-1)=16), what is the value of (k)?

Answer and explanation

Correct answer: (-2)

(p(-1)=-k+2+7+5=14-k), so (14-k=16) and (k=-2). Watch signs carefully when substituting a negative value.

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EvaluationParameterCubic PolynomialPolynomials In One VariablePolynomialsMathematicsClass 10 Mcq
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  1. 1If (p(x)=x²−8x+10), what are its zeroes?
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  10. 10What is the constant term of the polynomial \(7x^2+5x-11\)?
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