Question

find the square of the following numbers using diagonal method :
a) 43
b) 73
c) 198
d) 376
e) 567
solve with full formula.
please help me.​

Answer 1

$\huge \boxed{answer}$

$(43 )^{2} = 1849$

$(1) \: (1 + 6 + 1) \: (2 + 0 + 2) \: (9) \\ \\ 1849 \\ {43}^{2} = 1849$

$(73) ^{2} = 5321$

$(4 ) \: (2 + 9 + 2) \: (1 + 1) \: (9) \\ \\ (4 + 1) \: (13) \: (2) \: (9) \\ \\ (5 ) \: (3) \: (2) \: (1) \\ \\ (73) ^{2} = 5321$

$\huge \: thank \: you$