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What is obtained after simplifying (6a^2b+2ab^2-4a^2b+9ab^2)?

Answer and explanation

Correct answer: \(2a^2b+11ab^2\)

Only like terms can be added or subtracted. The coefficients of the \(a^2b\) terms give \(6-4=2\), and those of the \(ab^2\) terms give \(2+9=11\). Hence, the simplified expression is \(2a^2b+11ab^2\). In option A, the \(a^2b\) terms have incorrectly been added instead of subtracted. Exam tip: before combining terms, check that both the variables and their exponents are exactly the same.

Related tags

Algebraic ExpressionsLike TermsPolynomialsCombining TermsVariables And ExponentsIntroduction To PolynomialsMathematicsClass 9 Mcq

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