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Question
Find the square of the given number.
93
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Solution
932 = (90 + 3)2
= (90 + 3) (90 + 3)
= 90 (90 + 3) + 3 (90 + 3)
= 902 + 90 × 3 + 3 × 90 + 32
= 8100 + 270 + 270 + 9
= 8649
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