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Which expression is a polynomial in (x) with a decimal coefficient?

Answer and explanation

Correct answer: \(1.5x^2-4x+3\)

In \(1.5x^2-4x+3\), the powers of \(x\) are \(2, 1\), and \(0\), all of which are non-negative integers. Also, \(1.5\) is a decimal real coefficient, so the expression is a polynomial. Option B has a negative exponent, while option C has \(x\) raised to \(\frac12\); neither is a polynomial. Exam tip: in a polynomial, variable exponents must be \(0,1,2,\ldots\).

Related tags

Polynomial DefinitionDecimal CoefficientsExponentsReal CoefficientsClass 9 MathematicsDefinition Of A PolynomialIntroduction To PolynomialsMathematics

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