Question

1 задание,срочно пожалуйста

Answer 1

1) 2x-3xy+7-3x+5xy = 2xy-x
2)-4mn-2n²+3m+n²+3mn-4mn= -n²-5mn+3m
3)-4mn-2n²+3m-n²-3mn+4m = -3n²-7mn+7m
4)10a³-5a⁶
5)-2mn⁴-6m²n³+8mn³