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Question
Find the square of the given number.
86
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Solution
862 = (80 + 6)2
= 802 + 80 × 6 + 6 × 80 + 62
= 80 (80 + 6) + 6 (80 + 6)
= 6400 + 480 + 480 + 36
= 7396
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