Объяснение:
1.а)...= -14m³n^8
б)...=36m^10n^14
2. a)...;
2х²+4х-5-3х+2;
2х²+х-5+2;
2х²+х-3.
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Объяснение:
1.а)...= -14m³n^8
б)...=36m^10n^14
2. a)...;
2х²+4х-5-3х+2;
2х²+х-5+2;
2х²+х-3.