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Which of the following expressions represents the identity for the difference of two squares?
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Answer and explanation
Correct answer: \((a+b)(a-b)=a^2-b^2\)
The difference-of-squares identity is \((a+b)(a-b)=a^2-b^2\). On expansion, the middle terms cancel. Exam tip: a product of a sum and a difference gives a difference of squares.
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What is the correct answer to this question?
\((a+b)(a-b)=a^2-b^2\)
Why is this the correct answer?
The difference-of-squares identity is \((a+b)(a-b)=a^2-b^2\). On expansion, the middle terms cancel. Exam tip: a product of a sum and a difference gives a difference of squares.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Exploring Algebraic Identities. Topic: Algebraic identities.
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