(20а^4-4ab^3b):4а решите пожалуйста
(20а^4-4ab^3b):4а=4a(5a^3-b^3)/4a=5a^3-b^3
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(20а^4-4ab^3b):4а=4a(5a^3-b^3)/4a=5a^3-b^3