3x(x-2)-5x(x+3)= 2y(x-y)+y(3y-2x)= 3(x++3) 3(y+5)-2(y-6) - вопрос №3043166325323233352622 от ybrybrybrybrrby 25.11.2022 09:04

Question

Алгебра: 3x(x-2)-5x(x+3)= 2y(x-y)+y(3y-2x)= 3(x++3) 3(y+5)-2(y-6) 2a(a-b)+2b(a+b)= 3p(8c+1)-8c(3p-5)=

ybrybrybrybrrby · Answer

3*(х-2)-5*(х+3)=3х-6-5х-3=-2х-3, -2х=3, х=3/-2=-1,5
2у(х-у)+у(3у-2х)=2ху-2у²+3у²-2ху=у²
3(х+1)-(х+3)=3х+3-х-3=2х
3(у+5)-2(у-6)=3у+5-2у+6=у+11, у=-11
2а(а-в)+2в(а+в)=2а²-2ав+2ав+2в²=2а²+2в²
3р(8с+1)-8с(3р-5)=24рс+3р-24рс+40с=3р+40с