20:48

MATH&141 Section 9.7

27:48

MATH&141 Section 9.8

20:17

MATH&141 Other types of Equations

25:52

MATH&141 Section 4.6

25:20

[taglish] System of Linear Equations

26:25

MATH&141 Section 4.2

36:37

MATH&141 Section 9.1 and 9.2

48:50

MATH&141 Section 4.1