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If P(x) and Q(x) are two non-zero polynomials with degrees 4 and 6 respectively, which of the following statement is always true?

Answer and explanation

Correct answer: \(\deg(PQ)=10\)

For non-zero polynomials, the degree of a product equals the sum of their degrees. Hence \(\deg(PQ)=4+6=10\). In addition or subtraction, leading terms may cancel, so the degree is not fixed. Exam tip: add degrees only when polynomials are multiplied.

Related tags

PolynomialsDegree Of PolynomialProduct Of PolynomialsAlgebraic PropertiesClass 9 MathematicsDegree Of A PolynomialIntroduction To PolynomialsMathematics

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