1. Упростите выражение: -2 ab⁵ · (-3 a⁴b²)³
2. Решите уравнение:
а) 6(x-3)=8x -(3x-4)
б)4x-6,4=0
3. Выполните действия:
15y²+7y-(13y-5y²)
(а+2)·(а²-а-3)
(4аb²-6a²b):2ab
4. Упростите:
7y·(y+x-p)-7p·(x-y-p)+7x·(x-y+p)

Заранее спасибо.
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