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Which expression has a negative constant term and is still a polynomial?

Answer and explanation

Correct answer: x² − 11

The governing concept is that the sign of a coefficient does not determine whether an expression is a polynomial. A polynomial may have positive, negative or zero coefficients, but every exponent of the variable must be a non-negative integer. In option A, x² − 11 has powers 2 and 0; the constant term is −11, and both powers are permitted. Therefore, option A is correct. Option B includes x⁻², option C includes the fractional power 1/2, and option D includes x⁻¹. Those expressions are not polynomials because of their exponents, even though each also has the same negative constant term. The negative sign is acceptable; the exponent rule is decisive.

Related tags

PolynomialsNegative ConstantPolynomial DefinitionDefinition Of A PolynomialIntroduction To PolynomialsMathematicsClass 9 Mcq

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