Question

find out the square with out multiplication ( with the sums ) (i) 29^2 (ii) 34^2 (iii) 85^2 (iv) 95^2 (v) 66^2 (vi) 82^2 (vii) 102^2 ( with the sums ) ex : 42 = (30+9)^2 = 40(40+2)+2(40+2)
=40^2+40×2+2×40+2^2
=1600+80+80+4=1764
ex: 39
=(30+9)^2=30(30+9)+9(30+9)
=30^2+30×9+9×30+9^2
=900+270+270+81=1521​

Answer 1

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