NOTES
Tuto Q21 C
Tuto Q21 D
Tuto Q21 E
Tuto Q26
Tuto Q27
2.1 EQUATIONS
EX 1 ~ 5
EX 6 ~ 11
2.2 INEQUALITIES
EX 12 ~ 16A
Extra examples (FITSS)
EX 16B
2.3 ABSOLUTE VALUES
EX 17 ~ 20
EX 21 ~ 22