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प्रश्न
Find the square of 9.7
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उत्तर
(9.7)2 = (10 − 0.3)2
= (10)2 + (0.3)2 − 2 (10) (0.3)
= 100 + 0.9 − 6
= 100.09 − 6.00
= 94.09
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