Question

evalute the following using suitable identities (203)^2

Answer 1

a x a=a^2

203 x203=(203)^2

==41209

Answer 2

(203)² = (200+3)²
(a+b)² = a²+2ab+b²
(200+3)² = 200²+2*200*3+3²
(200+3)² = 40000+1200+9
(200+3)² = 41200+9
(200+3)² = 41209
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