Evaluate using the expansion of (a + b)^2 or (a – b)^2 : (92)^2 - Vidyadip

Question

Evaluate using the expansion of $(a + b)^2$ or $(a – b)^2 : (92)^2$

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Answer

$(92)^2 = (100 − 8)^{2 }$
$= (100)^2+ (8)^2 − 2(100) (8)$
$= 10000 + 64 − 1600$
$= 10064 − 1600$
$= 8464$

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