solve this 998*998 with special identity from 8 th class
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Answered by
16
(1000-2) (1000-2)= (1000-2)^2
=1000^2 + 2^2 - 2×1000×2
= 1000000+4-4000
=1000004-4000
= 996004
=1000^2 + 2^2 - 2×1000×2
= 1000000+4-4000
=1000004-4000
= 996004
Answered by
6
998=1000-2
(a-b)(a-b)=a×a-2ab+b×b
continue using a=998 and b=2
(a-b)(a-b)=a×a-2ab+b×b
continue using a=998 and b=2
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