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If c = 0, what will be the degree of cx^5 + (c + 1)x^4 - 3x + 2?

Answer and explanation

Correct answer: 4

Substitute c = 0 into every coefficient before finding the degree. The expression becomes 0x^5 + (0 + 1)x^4 - 3x + 2, which simplifies to x^4 - 3x + 2. The x^5 term disappears because its coefficient is zero. The highest power that remains with a non-zero coefficient is x^4, so the degree of the resulting polynomial is 4. Option A incorrectly keeps the vanished x^5 term. Option C considers only the term -3x and ignores the higher non-zero term x^4, while option D would describe a non-zero constant polynomial. Hence option B is correct.

Related tags

PolynomialDegreeSubstitutionDegree Of PolynomialCommon QuestionsCommonMathematicsClass 9 Mcq

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