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a2b2a^2-b^2

A(a+b)(a-b)

Ba22ab+b2a^2-2ab+b^2

C(a-b)(a-b)

D(a-b)

Answer:

A. (a+b)(a-b)

Read Explanation:

(a+b)(ab)(a+b)(a-b)

=a×aa×b+b×ab×b=a\times a-a\times b+b\times a-b\times b

=a2ab+abb2 = a^2 -ab +ab - b^2

=a2b2 = a^2 - b^2


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