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If f(x) = cx^2 + 4x + 1 must become a non-zero constant polynomial, what is impossible?

Answer and explanation

Correct answer: Make the 4x term zero

A non-zero constant polynomial contains no variable-dependent terms and has a non-zero constant value. In f(x) = cx² + 4x + 1, the value of c controls only the coefficient of x². Setting c = 0 removes cx², so removing the x² term is possible. Keeping the constant term 1 is also possible and ensures that the remaining value is non-zero. However, the coefficient of 4x is fixed at 4 and is independent of c. No selection of c can change 4 into 0, so the term 4x cannot be eliminated using the given parameter. Therefore making the 4x term zero is impossible, and option C is correct. The question tests which coefficient is actually controlled by c.

Related tags

Constant-PolynomialCoefficientsPolynomial-TermsIntroduction To PolynomialsMathematicsClass 9 McqDefinition Of A Polynomial

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