Using suitable identities, evaluate the following. 9.8 10.2 - Vidyadip

Question

Using suitable identities, evaluate the following. $9.8 \times 10.2$

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Answer

$9.8 \times 10.2$
$= (10 - 0.2)(10 + 0.2)$
$= 102 - (0.2)^2$
$= 100 - 0.04$
$= 99.96$

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