Using identities find,(I) 100 x 104.......????
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It can be written as (102-2) (102+2)
The identity is (a+b) (a-b) = a square - b square
So 102 square - 2 square = 10400
The identity is (a+b) (a-b) = a square - b square
So 102 square - 2 square = 10400
Mayyu2002:
You can also check by directly multiplying 100* 104 . The answer will be same
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