Question
(387 x 387 + 113 x 113 + 2 x 387 x 113) = ?
Answer: Option B
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Given Exp. = (387 x 387 + 113 x 113 + 2 x 387 x 113)
= `(387)^2 + (113)^2` + 2 x 387 x 113 )
= `(a^2 + b^2 + 2ab)` where a = 387 and b = 113
= `(a + b)^2 = (387 + 113)^2`
= `(500)^2` = 250000.
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