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In which option are all powers valid for a polynomial?

Answer and explanation

Correct answer: \(x^5+x^2+1\)

In a polynomial, the powers of a variable must be 0 or positive integers. In \(x^5+x^2+1\), the powers of \(x\) are 5, 2, and 0; the constant term \(1\) has power 0. Hence, option A is correct. Option B has a negative power, option C has a fractional power, and in option D, \(\frac{1}{x}=x^{-1}\), which has a negative power. Exam tip: To identify a polynomial, check that no variable has a negative or fractional exponent.

Related tags

PolynomialsDefinition Of PolynomialExponentsClass 9 MathematicsAlgebraDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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