الف) $(x - ..........)^2 = x^2 - .......... + 16$

ب) $(3x - 2y)^2 = 9x^2 - .......... + ..........$

پ) $(1/6)^2 + 2(1/6)(3/4) + (3/4)^2 = (.......... + ..........)^2 = ..........$