Simplify the following:-4(ad-bc)sq.
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4(ac-bc)sq.
=2sq.(ad-bc)sq
=(2(ad-bc))sq.
=(2ad-2bc)2
=(2ad+2bc)(2ad-2bc)
=2sq.(ad-bc)sq
=(2(ad-bc))sq.
=(2ad-2bc)2
=(2ad+2bc)(2ad-2bc)
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