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Riya claims that \(5x^{-1}+3\) is a polynomial because it contains only the variable \(x\) and numbers. What is the error in Riya's claim?

Answer and explanation

Correct answer: बहुपद में चर का घात ऋणात्मक नहीं हो सकता।

In a polynomial, exponents of variables must be non-negative integers such as 0, 1, or 2. Here, \(x^{-1}=1/x\), so the variable occurs in the denominator and the expression is not a polynomial. Exam tip: reject expressions with negative or fractional variable exponents.

Related tags

PolynomialsDefinition Of PolynomialNegative ExponentsAlgebraic ExpressionsClass 9 MathematicsDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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