Tính nhanh: 34^2 + 66^2 + 68.66; 74^2 + 24^2 - 48.74; 136^2 - 92.136 + 46^2

1 Tính nhanh
a ) 34^2+ 66^2+ 68.66; 74^2+24^2 - 48.74; 136^2 -92.136 + 46^2
b ) 153^2 + 94.153 + 47^2; 126^2 -152.126+ 5776
c ) 28^2 - 8^2; 56^2 - 46^2;67^2 - 56^2
d ) 3^8.5^8 - (15^4 - 1)(15^4 + 1)
e ) (50^2+ 48^2+...2^2)-(49^2+47^2+...+1^2)
f ) (2+1)(2^2+1)(2^4+1)....(2^16+1)+1
g ) 9^3+1 ; 99^3+1
h ) 12^3 - 8; 31^3 - 1; 101^3 -1