-(-d²e⁵)³ * (3d⁵e)⁵ ; 6) (-1000t3u3)*. (-0,4t3u)3.

Ответ: -(-d²e⁵)³ * (3d⁵e)⁵ = (d²e⁵)³ * (3d⁵e)⁵ = d⁶e¹⁵ * 243d²⁵e⁵ = 243d²⁵e²⁰

(-1000t³u³) * (-0,4t³u)³ = -1000t³u³ * (-0,064t⁹u³) = 64t¹²u⁶

Итак, окончательный ответ: 243d²⁵e²⁰ + 64t¹²u⁶