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Which of the following expressions is a polynomial in only one variable?

Answer and explanation

Correct answer: 3x^2-5x+1

In \(3x^2-5x+1\), the only variable is x and its exponents are 2, 1, and 0, all non-negative integers. Hence it is a polynomial in one variable. In \(1/x\), x has exponent −1. Exam tip: fractional or negative exponents are not allowed in polynomials.

Related tags

PolynomialsAlgebraic ExpressionsOne VariableExponentsClass 9 MathematicsIntroduction To PolynomialsMathematicsClass 9 Mcq

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