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If the degree of ((c-6)x^8+(c^2-36)x^5+31) is (0), what is the value of (c)?

Answer and explanation

Correct answer: (c=6)

Direct answer: Option A, \\(c=6\\). A degree-zero polynomial is a nonzero constant, so every term containing a positive power of x must vanish. The coefficient of x^8 is c-6; setting it to zero gives c=6. The coefficient of x^5 is \\(c^2-36\\), and at c=6 it becomes \\(36-36=0\\) as well. The expression therefore reduces to the constant 31, whose degree is 0. Option A satisfies both cancellations. Option B, c=-6, makes the x^8 coefficient -12, so degree 8 remains, even though the x^5 coefficient becomes zero. Option C, c=0, leaves nonzero x^8 and x^5 terms. Option D, c=36, also leaves a nonzero x^8 coefficient. Do not confuse the value zero with degree zero: the remaining constant 31 must be nonzero.

Related tags

PolynomialParameterConstant Degree

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