Answers

2016-01-30T15:29:52+05:30
Now rhs=(a-b)square
=(a-b) (a-b)
=a(a-b)-b(a-b)
=("a"square-ab)(-ab+"b" square)
now opening bracket ,we get.
"a"square-ab-ab+"b"square
="a"square-2ab+"b"square
hence proved...
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