Question

решите даю 10баллов..​

Answer 1

1

А. 5м²+25м-м³-5м²=25м-м³

Б. А³-2А²В+6АВ²+4А²В-8АВ²+24В³=А³+2А²В-2АВ²+24В³

2

15х²-(3х+2)(5х-4)=-6

15х²-(15х²-12х+10х-8)=-6

15х²-15х²+2х+8=-6

2х=-14

х=-7