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After simplifying (4x^6(x^2-1)-4x^8+3x^5), what is the degree?

Answer and explanation

Correct answer: 6

Expanding gives 4x^6(x^2-1)=4x^8-4x^6. Therefore, the expression becomes 4x^8-4x^6-4x^8+3x^5=-4x^6+3x^5. The x^8 terms cancel, and the highest remaining power of x is 6, so the degree is 6. Option 8 is incorrect because no x^8 term remains after simplification. Exam tip: Expand brackets and combine like terms before finding a polynomial’s degree.

Related tags

PolynomialsDegree Of PolynomialExpansionLike TermsCancellationDegree Of A PolynomialIntroduction To PolynomialsMathematics

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