(a+b)×(a-b) =
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(a+b)(a-b)
in this sum we use a formula and proved it
(a+b)(a-b)
=a²-b²(identity)
proof:-(a+b)(a-b)
in multiplication of two bionomial we always get two or three terms
by cutting or grouping
(a+b)(a-b)
=a(a-b)+b(a-b)
=a²-ab+ab-b2
=a²-b²
in this multiplication we cut -ab and +ab
bionomial is a type of algebraic expression which has two terms
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Answer:
a+b)×(a-b) = a square - b square
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