Find the value of $87^{2} - 13^{2}$ .

7300

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7350

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7400

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7450

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Solution

The correct option is C $7400$
Given, $87^{2} - 13^{2}$ .

We know, $a^{2} - b^{2} = (a + b) (a - b)$ .

Then,
$= 87^{2} - 13^{2}$
$= (87 + 13) (87 - 13)$
$= 100 \times 74 = 7400$ .

Therefore, option $C$ is correct.

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