Indentity used to find 49×49 is
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SPECIAL IDENTITY
The answer is 2401
Step-by-step explanation:
Using (a-b)2 = a 2 + 2ab + b 2 to calculate the value of (49)2
We can write (49)2 as (50-1)2
(50-1)2 = 50 2 - 2×50×1 + (1)2
= 2500 - 100 + 1
= 2401
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