Find the value of $(99)^{2} .$

$98001$

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$9801$

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$981$

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$9981$

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Solution

The correct option is B
$9801$

$(99)^{2}$ can also be expressed as $(100 - 1)^{2} .$

According to the identity $(a - b)^{2} = a^{2} + b^{2} - 2 a b,$

$(99)^{2} = (100 - 1)^{2} = (100)^{2} + (1)^{2} - (2 \times 100 \times 1) = 10000 + 1 - 200 = 10001 - 200 = 9801$

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Similar questions

101^{2} - 99^{2} =

99^{2}

^{2}

204 \times 206

992^{2}

The value of $100^{2} - 99^{2}$ is equal to

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