a) 51^2 = (50+1)^2 = 2500 + 100 + 1 = 2601
b) 62^2 = (60 + 2)^2 = 3600 + 240 + 4 = 3844
c) 23^2 = (20 + 3) ^2 = 400 + 120 + 9 = 529
e) 301^2 = (300 + 1)^2 = 90000 + 600 + 1 = 90601
f) 502^2 = (500 + 2)^2 = 250000 + 2000 + 4 = 252004
m) 99^2 = (100 - 1)^2 = 10000 - 200 + 1 = 9801
n) 88^2 = (100 - 12)^2 = 10000 - 2400 + 144 = 7744
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a) 51^2 = (50+1)^2 = 2500 + 100 + 1 = 2601
b) 62^2 = (60 + 2)^2 = 3600 + 240 + 4 = 3844
c) 23^2 = (20 + 3) ^2 = 400 + 120 + 9 = 529
e) 301^2 = (300 + 1)^2 = 90000 + 600 + 1 = 90601
f) 502^2 = (500 + 2)^2 = 250000 + 2000 + 4 = 252004
m) 99^2 = (100 - 1)^2 = 10000 - 200 + 1 = 9801
n) 88^2 = (100 - 12)^2 = 10000 - 2400 + 144 = 7744