В решении.
1) (-1/2 m³) * 16 m² =
= (-0,5 m³) * 16 m² =
= (-0,5 * 16) m³⁺² =
= -8 m⁵;
2) (3/4 x²y³z)*(2/3 x³y²z²) =
= (3/4 * 2/3) x²⁺³y³⁺²z¹⁺² =
= 1/2 x⁵y⁵z³ =
= 0,5 x⁵y⁵z³;
3) (-3/5 а²ху³)*(2/3 ах²у) =
= (-3/5 * 2/3) а²⁺¹х¹⁺²у³⁺¹ =
= -2/5 а³х³у⁴ =
= -0,4 а³х³у⁴;
4) (10 1/3 ab²c⁴)*(1 5/31 a⁷bc²) =
= (31/3 * 36/31) a¹⁺⁷b²⁺¹c⁴⁺² =
= 12 a⁸b³c⁶.