Question

[Ánh Nguyễn Văn]

Viet thanh tich:

a) \(\frac{1}{8}x^3-\frac{3}{2}x^2+\frac{3}{2}x-1\)

b) \(\frac{1}{8}x^3-\frac{1}{4}x^2y+\frac{1}{12}xy^2-\frac{1}{27}y^3\)

Answer 1

[minhduc]

a, (x³.x².x).(1/8-3/2+3/2-1)                      b, (x³.x²y.xy².y³).(1/8-1/4+1/12-1/27)

  =x⁶.(-7/8)                                                 = x⁶.y⁶.9.(-17/216)