Q. 1 A5.0( 2 Votes )

# Now compute the squares of these numbers in head:52

Using (x+y)2 = x2 + xy +yx +y2

(52)2 = (50 + 2)2

=(50)2 + 2×50×2 + (2)

= 2500 + 200 + 4

= 2704

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