Q6 of 59 Page 162

Use appropriate formulae and compute:

(103)2

(103)2 = (100 + 3)2


We use (a + b)2 = a2 + 2ab + b2


⇒ (103)2 = 1002 + 2× 100× 3 + 32


⇒ (103)2 = 10000 + 600 + 9 = 10609


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