Verified answer

Объяснение:

1) 28р⁴ / 5q³ * 15q²(p - 2) / 7p² =

4p² / q * 3(p - 2) = 12p²/q * (p - 2) =

12p³ - 24p² / q

2) 12p³ - 24p² / q : (3p²/4q³) =

12p³ - 24p² / q * (4q³/3p²) =

3p² * (4p - 8) * 4q²/3p² = (4p - 8) * 4q² =

16pq² - 32q²