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Class 9 Mathematics Introduction to Polynomials Degree of a PolynomialHard

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If (R(x)=(x^4+2x^2)^2-x^8-4x^6+5x), what is the degree of (R(x))?

Answer and explanation

Correct answer: (4)

((x^4+2x^2)^2=x^8+4x^6+4x^4). After higher terms cancel, (4x^4+5x) remains, whose degree is (4).

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Polynomial Square Cancellation Degree Of A Polynomial Introduction To Polynomials Mathematics Class 9 Mcq

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