Question

The value of (A+B) × (A - B) is
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Answer 1

Answer:

A²-B²

Explanation:

(A + B) (A - B) → Firsts: A * A = A^2 (A squared) → Outers: A * (-B) = (-AB) → Inners: B * A = AB → Lasts: B * (-B) = (-B^2)

Now, add the products together:

A^2 + (-AB) + AB + (-B^2) =

A^2 - AB + AB - B^2 → Like terms AB cancel to get your final answer →

A^2 - B^2.

Answer 2

Answer:

$(a + b)(a - b)$

$= a {}^{2} - ab + ab - b {}^{2}$

$by \: cancelling \: we \: get =$

$= a {}^{2} - b {}^{2}$