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If (b\neq-2), what will be the degree of ((b+2)x^{12}+5x^6-4)?

Answer and explanation

Correct answer: (12)

The degree of a polynomial is the greatest exponent of the variable whose coefficient is not zero. In this expression, the term with the greatest exponent is \\(b+2\\) times \\(x^{12}\\). The condition \\(b\\ne-2\\) guarantees that \\(b+2\\) is not zero, so this term is genuinely present. Therefore the polynomial has degree 12, and option B is correct.

The other terms, \\(5x^6\\) and \\(-4\\), have degrees 6 and 0, which are smaller than 12. A term of degree 12 cannot disappear under the given condition. If \\(b=-2\\), the leading term would vanish and the degree would become 6, but that value is excluded. Hence the highest remaining power is 12.

Related tags

PolynomialNonzero ParameterDegree

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