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For which value will ((m+1)x^3+5x-6) become a linear polynomial?

Answer and explanation

Correct answer: \(m=-1\)

A linear polynomial has degree 1. Therefore, the \(x^3\) term must vanish, so its coefficient must be zero: \(m+1=0\). Hence, \(m=-1\). For this value, the expression becomes \(5x-6\), which is a linear polynomial. If \(m=0\), the expression is \(x^3+5x-6\), which has degree 3. Exam tip: To make a polynomial linear, set the coefficient of its highest-degree term to zero.

Related tags

PolynomialsLinear PolynomialDegree Of PolynomialParameterAlgebraDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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