Question

Evaluate product without multiplying directly of 102*98

Answer 1

102*98

( 100 + 2 ) ( 100 - 2 )

Identity :-  ( a + b ) ( a - b ) = a^2 - b^2

( 100 + 2 ) ( 100 - 2 )

here a = 100 , and b = 2

100^2 - 2^2

10000-4

9996

Answer 2

the given solution is above