Find the square of the given numbers
71
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Solution
712 = (70 + 1)2
= 70 (70 + 1) + 1 (70 + 1)
= 702 + 70 × 1 + 1 × 70 + 12
= 4900 + 70 + 70 + 1
= 5041
Concept: Finding the Square of a Number
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