Вправи: 417

417. Спростіть вираз:

1) (10m²n)² ∙ (3mn²)³ = 100m⁴n² ∙ 27m³n⁶ = 2700m⁷n⁸;

2) (–12ab³)³ ∙ (4а⁵)² = –18a³b⁹ ∙ 16a¹⁰ = –2a¹³b⁹;

3) –(3a⁶m²)³ ∙ (–a²b)⁴ = –(27a¹⁸m⁶)(a⁸b⁴) = –27a²⁶b⁴m⁶;

4) (–5ху⁶)⁴ ∙ (0,2x⁶y)⁴ = 625x⁴y²⁴ ∙ 0,0016x²⁴y⁴ = x²⁸y²⁸.