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Evaluate (998)square

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Evaluate (998)square

Posted by Prashant Rao 5 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

(998)²
(1000-2)²
we know that
{tex}(a-b)^2=a^2 +b^2-2ab{/tex}
put a= 1000. b=2
{tex}=1000^2 + 2^2 -2×1000×2{/tex}
= 1000000 + 4 -4000
= 1000004 - 4000
= 996004

1Thank You

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