Analyse and answer the question — task. Maths CBSE Live product, Class 8 (2026-27).

Assertion (A): \((a + m)(b + n)\) \(+\) \((a - m)(b - n)\) \(=\) \(2(ab + mn)\)

Reason (R): The sum of the products \((a + m)(b + n)\) and \((a - m)(b - n)\) eliminates the terms involving \(an\) and \(mb\).

Assertion(A) is true but reason(R) is false
Both assertion(A) and reason(R) are true but reason(R) is not the correct explanation of assertion(A)
Assertion(A) is false but reason(R) is true
Both assertion(A) and reason(R) are true and reason(R) is the correct explanation of assertion(A)

Did you find an error?

9. Analyse and answer the question