а)-3a+5b-4+4a²b²+5a5b4-ab3+a³b
б)4a²b²+a³b+5a5b4-ab3-3a+5b-4
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а)-3a+5b-4+4a²b²+5a5b4-ab3+a³b
б)4a²b²+a³b+5a5b4-ab3-3a+5b-4