(8.1)^2 using identiy -1
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10
Answer:
Hope it helps you✌✌
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Answered by
2
Answer:
65.61
Step-by-step explanation:
(8.1)²
= (8 + 0.1)²
= 8² + (0.1)²+2×8×(0.1) [(a+b)²=a²+b²+2ab]
= 64 + 0.01 + 1.6
= 65.61
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