Question

Solve and find the square of 63 by a shortcut method

Answer 1

Step-by-step explanation:

$(60 + 3) {}^{2} \\ = (60) { }^{2} + (3) {}^{2} + 2 \times 60 \times 3 \\ = 3600 + 9 + 360 \\ = 3969$

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