Find the square of 1468 by writing this as 1465 + 3. – InterviewSolution

1.

Find the square of 1468 by writing this as 1465 + 3.

Answer»

First find the square of 1465.

(1465)² =(146 × 147)25 [Statement 9]

(1465)² = 2146225

(1465 + 3)² = 1465² + 2 × 1465 × 3 + 3²

= 2146225 + 8790 + 9

(1468)² = 2155024

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