evaluate the foll using suitble identities 99x101
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99 × 101
= ( 100 - 1 ) ( 100 + 1 )
Using identity --
( a + b ) ( a - b ) = a^2 - b^2
= ( 100 )^2 - ( 1) ^2
= 10000 - 1
= 9999 Ans.
= ( 100 - 1 ) ( 100 + 1 )
Using identity --
( a + b ) ( a - b ) = a^2 - b^2
= ( 100 )^2 - ( 1) ^2
= 10000 - 1
= 9999 Ans.
Answered by
0
99=100-1 &101=100+1
(100-1)*(100+1)
(100²-1²)
(100-1)*(100+1)
(100²-1²)
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