a)
[tex](-4)*2*(-3\frac{1}{8})*\frac{1}{5}=(-4)*2*(-\frac{25}{8})*\frac{1}{5}=2*\frac{5}{2}=5[/tex]
b)
[tex](-0,1)*x*10xy^{2} =-x^{2} y^{2}[/tex]
c)
[tex](-a)*6x^{2} y*(-5y)*(-0,4)=-a*12x^{2} y*y=-12ax^{2} y^{2}[/tex]
d)
[tex]\frac{1}{2}*x*x*x*(-2y)*(-y)*(-y)=-x*x*xy*y*y=-x^{3}y^{3}[/tex]
e)
[tex]\frac{1}{2}ababab*(-2)= -ababab=-a^{3} b^{3}[/tex]
f)
[tex](-1)*(-1)*(-1)*xyxy*(-1)=1*1*1xyxy*1=x^{2} y^{2}[/tex]
g)
[tex](-3)^{2} *(-3)*a^{2} bb*(-3)=3^{2} *(-3)a^{2} b*b*(-3)=3^{4}a^{2} b^{2} =81a^{2} b^{2}[/tex]
h)
[tex]6mn^{2} *\frac{1}{3}m^{3}*(-2)*n= -2mn^{2} m^{3}*2n=-4m^{4}n^{3}[/tex]
