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प्रश्न
Find the squares of the following numbers using the identity (a + b)2 = a2 + 2ab + b2:
605
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उत्तर
On decomposing:
605 = 600 + 5
Here, a = 600 and b = 5
Using the identity (a + b)2 = a2 + 2ab + b2:
6052 = (600 + 5)2 = 6002 + 2(600)(5) + 52 = 360000 + 6000 + 25 = 366025
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