Ctg 56 * tg 56 = 1 ......
( 2x - 1 ) ^2 - 5 = 4x^2 - 3(X - 1 ) ;
4x^2 - 4x + 1 - 5 = 4x^2 - 3x + 3 ;
- 4x + 3x = 3 + 4 ;
X = 7
1) log2(64^(1/3)) = log2(4) = 2
2) (log4(2))^2 = (1/2)^2 = 1/4
3) log3(3^(1/8)) = 1/8 * log3(3) = 1/8
4) log2(1/8) = -3
5) 1/4 - 3 = -11/4