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If (p(x)=x^2+ax+a), when will its degree be (2)?

Answer and explanation

Correct answer: For all real \(a\)

The degree of a polynomial is the highest exponent whose coefficient is non-zero. Here, the coefficient of \(x^2\) is \(1\), and it never becomes zero for any value of \(a\). Hence, \(p(x)\) has degree \(2\) for all real \(a\). Even when \(a=0\), \(p(x)=x^2\), which still has degree \(2\). Exam tip: In a polynomial containing a parameter, first check whether the coefficient of the highest-power term can become zero.

Related tags

PolynomialsDegree Of PolynomialParameterQuadratic PolynomialAlgebraDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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