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If (A(x)=x^6+2x^3+1) and (B(x)=x^6+2x^3), what is the degree of (A(x)-B(x))?

Answer and explanation

Correct answer: 0

On subtracting, the like terms cancel: \(A(x)-B(x)=(x^6+2x^3+1)-(x^6+2x^3)=1\). This is a non-zero constant polynomial, so its degree is \(0\). Option 6 is the degree of the original polynomials, but the \(x^6\) terms do not remain after subtraction. Exam tip: simplify a polynomial difference fully before identifying its degree.

Related tags

PolynomialsDegree Of PolynomialConstant PolynomialSubtraction Of PolynomialsClass 9 MathematicsDegree Of A PolynomialIntroduction To PolynomialsMathematics

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