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The degree of (-6x^9+2x^5-3x+11) is decided by which term?

Answer and explanation

Correct answer: (-6x^9)

The degree is determined only after substituting the given value of the variable or parameter. A term that appears to have a high power may disappear if its coefficient becomes zero. Here, putting \(c=0\) removes the \(x^{10}\) term, so we must inspect the remaining terms rather than choosing 10 automatically. The correct option is B.

Substitute \(c=0\): \(cx^{10}=0x^{10}=0\), and \((c+4)x^6=(0+4)x^6=4x^6\). The expression becomes \(4x^6-3x+2\). Its nonzero exponents are 6, 1, and 0, so the greatest is 6. Therefore the degree is 6. Option A is wrong because the coefficient of \(x^{10}\) has become zero.

Related tags

PolynomialLeading TermDegree

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