Question

Now- compute the squares of these numbers in head 52

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Answer 1

Answer:

Using (x+y)^2 = x^2 + xy +yx +y^2

(52)^2 = (50 + 2)^2

=(50)^2 + 2×50×2 + (2)

= 2500 + 200 + 4

= 2704