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If (x=2) and (y=1), which statement is correct about (x^2y+xy^2) and (xy(x+y))?

Answer and explanation

Correct answer: Both are equal

Taking the common factor \(xy\) from the first expression gives \(x^2y+xy^2=xy(x+y)\). Therefore, the two expressions are equal for every value of \(x\) and \(y\). Substituting the given values, \(2^2\times1+2\times1^2=6\) and \(2\times1\times(2+1)=6\). Hence, neither expression is greater. Exam tip: factor out the common term \(xy\) to check such equivalence quickly.

Related tags

Algebraic ExpressionsPolynomialsFactorisationCommon FactorEquivalent ExpressionsSubstitutionIntroduction To PolynomialsMathematics

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