Ответ:
1) [tex]=2x^3y*3x=6x^4y[/tex]
2) [tex]=-\frac{4}{25} c^2d*10^3c=-\frac{4*1000c^3d}{25} =-4*40c^3d=-160c^3d[/tex]
3) [tex]=2a^3b*\frac{1}{16} b=a^3b*\frac{1}{8} b=\frac{1}{8} a^3b^2(or\ 0,125a^3b^2)[/tex]
4) [tex]=-9pq^2*8pq=-72p^2q^3[/tex]
5) [tex]=-\frac{13}{5} cs^3*\frac{25}{169} d^2=-cd^3*\frac{5}{13} d^2=-\frac{5}{13} cd^5[/tex]
6) [tex]=4^3xy*\frac{9}{256} y=4^3xy*\frac{9}{4^4} y=xy*\frac{9}{4} y=\frac{9}{4} xy^2[/tex]
