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Which of the following algebraic identities expresses the product of the sum and difference of two terms as the difference of their squares?

Answer and explanation

Correct answer: \((a+b)(a-b)=a^2-b^2\)

In \((a+b)(a-b)\), the cross terms \(+ab\) and \(-ab\) cancel, leaving \(a^2-b^2\). Option A is the square of a sum, not this product. Exam tip: look for opposite signs.

Related tags

Algebraic IdentitiesDifference Of SquaresPolynomialsClass 9 MathematicsBinomial ProductsExploring Algebraic IdentitiesMathematicsClass 9 Mcq

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