Question
Using suitable identities, evaluate the following.
$(132)^2- (68)^2$
$(132)^2- (68)^2$
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| Side | $3$ | $4$ | $5$ | $6$ |
| Angle sum | $180^\circ$ | $2 \times 180^{\circ}$ $=(4-2) \times 180^{\circ}$ |
$3 \times 180^{\circ}$ $=(5-2) \times 180^{\circ}$ |
$4 \times 180^{\circ} $ $=(6-2) \times 180^{\circ}$ |
| Language | Number of students |
| Hindi | 40 |
| English | 12 |
| Marathi | 9 |
| Tamil | 7 |
| Bengali | 4 |
| Total | 72 |