Question

Find the square of 63 without actually performing the multiplication.

Answer 1

Answer:

$63 \times 63 = 2079$

Answer 2

Answer:

63^2 = (60 + 3)^2

         = 60^2 + 3^2 + 2(60)(3)

         =3600 + 9 + 360

         = 3969

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