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If (A(x)=x^9+5x^4+11) and (B(x)=x^9+5x^4), what is the degree of (A(x)-B(x))?

Answer and explanation

Correct answer: 0

On subtraction, the like terms cancel: \(A(x)-B(x)=(x^9+5x^4+11)-(x^9+5x^4)=11\). Since 11 is a non-zero constant polynomial, its degree is \(0\). Options 9 and 4 refer to powers in the original polynomials, but those terms do not remain after subtraction. Exam tip: always simplify a sum or difference of polynomials before finding its degree.

Related tags

PolynomialsDegree Of PolynomialSubtraction Of PolynomialsConstant PolynomialClass 9 MathematicsDegree Of A PolynomialIntroduction To PolynomialsMathematics

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