bjr
A = (3x - 1/2) (2x - 1/3)
A = 3x*2x + 3x*(-1/3) + (-1/2)*2 + (-1/2)*(-1/3)
A = 6x² - x - 1 + 1/6
A = 6x² - x - 5/6
B = (5/4x + 1) (3/2x - 1)
B = 5/4x*3/2x - 5/4x + 3/2x - 1
B = 15/6x² + 1/4x - 1
B = 5/2x² + 1/4x - 1
C= (1/2x - 1/3) (1/3x - 1/2)
C = 1/6x² - 1/4x - 1/9x + 1/6
C = 1/6x² - 9/36x - 4/36x + 1/6
C = 1/6x - 13/36x + 1/6