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Which option has degree (10) and coefficient of (x^9) equal to (0)?

Answer and explanation

Correct answer: (6x^{10}-4x^8+1)

The degree is the greatest exponent with a nonzero coefficient, while the coefficient of a missing power is zero. We must check both requested conditions: the polynomial must contain a nonzero \(x^{10}\) term, and it must contain no \(x^9\) term. Only option A satisfies both. In option B the \(x^9\) coefficient is 1, and the other options have the wrong degree.

For option A, \(6x^{10}-4x^8+1\), the greatest exponent is 10 because the coefficient 6 is nonzero. There is no displayed \(x^9\) term, so its coefficient is understood to be 0. Option B has an \(x^9\) term, option C has degree 9, and option D has degree 11. Therefore option A is the only correct choice.

Related tags

PolynomialDegreeMissing Term

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