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If \(P(x)\) and \(Q(x)\) are non-zero polynomials, which of the following statements is always true?

Answer and explanation

Correct answer: \(\deg(PQ)=\deg P+\deg Q\)

When non-zero polynomials are multiplied, their leading terms multiply, so their exponents add: \(\deg(PQ)=\deg P+\deg Q\). In addition, leading terms may cancel, so option D is not always true. Exam tip: always check the non-zero condition before using the product-degree rule.

Related tags

PolynomialsDegree Of PolynomialNon-Zero PolynomialsLeading TermAlgebraClass 9 MathematicsDegree Of A PolynomialIntroduction To Polynomials

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