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Which expression is a polynomial but does not have degree (2)?

Answer and explanation

Correct answer: \(5x^4-x+2\)

In \(5x^4-x+2\), the highest power of \(x\) is \(4\). Therefore, it is a polynomial of degree \(4\), not degree \(2\). \(x^2+x+1\) is also a polynomial, but its degree is \(2\). \(\sqrt{x}+1\) has \(x\) raised to \(\frac{1}{2}\), and \(\frac{1}{x}+x^2\) has \(x\) raised to \(-1\), so neither is a polynomial. Exam tip: exponents of variables in a polynomial must be non-negative integers.

Related tags

Polynomial DefinitionDegree Of PolynomialAlgebraic ExpressionsClass 9 MathematicsDegree Of A PolynomialIntroduction To PolynomialsMathematicsClass 9 Mcq

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