Using distributive law, find the squares of (a) 101 (b) 72
(a) We have, 1012 = 101 x 101
= 101(100+ 1)= 10100+ 101 = 10201
(b) We have, 722 = 72 x 72 = 72 x (70 + 2)
= 5040+ 144= 5184
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