2x-xy+ax-ay
2(a-b) + c(a-b)
367,2 : 100 = 3,672
3,672 х 2 = 7,344
367,2 - 7,344 = 359,856
Y`=-4/(x+1)²≠0
y(0)=4/1=4
y(3)=4/4=1-наим
1) (7а - 9в) + (-3в + 2а)= 7а-9в+(-3в) +2а= 7а+2а+(-9в)-3в=9а+(-12в)
2) (-3х2-5х+1)-(-3х2+2х-9)=-3х2-5х+1-3х2-2х+9=-3х2-3х2-5х-2х+1+9= -6х2-3х+10