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Which statement is correct about \(4x^2+\frac{3}{4}x-9\)?

Answer and explanation

Correct answer: It is a polynomial because all powers of the variable are non-negative integers.

In \(4x^2+\frac{3}{4}x-9\), the powers of \(x\) are \(2\), \(1\), and \(0\), all of which are non-negative integers. Hence, it is a polynomial. Polynomial coefficients may be fractional or negative, so \(\frac{3}{4}\) and \(-9\) do not make it invalid. It is not the zero polynomial because all its coefficients are not zero. Exam tip: while identifying a polynomial, check the powers of the variable rather than the signs of the coefficients.

Related tags

Polynomial DefinitionFractional CoefficientsNon-Negative Integer PowersZero PolynomialClass 9 MathematicsDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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