Вправи: 281

281. Спростіть вираз:

1) 20a⁸ ∙ (9a)² = 20⁸ ∙ 81a² = 1620a¹⁰;

2) (–b⁵)⁴ ∙ 12b⁶ = b²⁰ ∙ 12b⁶ = 12b²⁶;

3) (3m⁶n³)⁴ ∙ (–181m⁹n) = 81m²⁴n¹² ∙ (–181m⁹n) = –m³³n¹³;

4) (0,2x⁷y⁸)³ ∙ 6x²y² = 0,008x²¹y²⁴ ∙ 6x²y² = 0,048x²³y²⁶;

5) (–12ab⁴)³ ∙ (4a⁶)² = –18a³b¹² ∙ 16a¹² = –2a¹⁵b¹²;

6) (–23x²y)⁵ ∙ (–34xy²)² = –32243x¹⁰y⁵ ∙ 916x²y⁴ = –227x¹²y⁹.