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What is the main reason (9x^0-4x+2x^2) is considered a polynomial?

Answer and explanation

Correct answer: Because all powers of x are non-negative integers: 0, 1, and 2

In a polynomial, the powers of a variable must be zero or positive integers. Here, the powers of x are 0, 1, and 2, so the expression is a polynomial. Also, x^0 = 1, so 9x^0 = 9 is a constant term; therefore, option C is incorrect. Option A is also wrong because x^0 = 1. Exam tip: while identifying a polynomial, check that no variable has a negative, fractional, or variable exponent.

Related tags

PolynomialsDefinition Of PolynomialNon-Negative ExponentsZero ExponentAlgebraClass 9 MathematicsDefinition Of A PolynomialIntroduction To Polynomials

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