Question

помогите срочно номер 1 и 2

Answer 1

1) 3x3 -1+5x3+3x2+7= 8x3 +3x2+6
2)a3+3a2+1+6-5a2=a3-3a2+7
3)3m3+5m2-7+2m3+6=5m3+5m2-1
4)b2+3b-1,2b-3b2+2b2+7=1,8b+7