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Which option has degree (7) and coefficient of (x^6) equal to (0)?

Answer and explanation

Correct answer: (3x^7-2x^5+1)

The degree of a polynomial is its greatest exponent with a non-zero coefficient. The coefficient of a missing term is understood to be zero. Thus we must check both requirements: the highest present power must be 7, and the x^6 term must be absent. A term such as x^5 does not affect either requirement, provided the x^7 term remains present.

Option A is 3x^7-2x^5+1. Its x^7 coefficient is 3, so its degree is 7. There is no x^6 term, meaning its coefficient is 0. Option B contains x^6, option C has degree 6 rather than 7, and option D has degree 8. Therefore option A satisfies both conditions.

Related tags

PolynomialDegreeMissing Term

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