Ответ:
1) 96a²+9a
2) 2x³-x²-x
3) 6m⁴-8m; 42m
4) 15xy-x³y+x²²-9xy³
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Ответ:
1) 96a²+9a
2) 2x³-x²-x
3) 6m⁴-8m; 42m
4) 15xy-x³y+x²²-9xy³