=(a²-1)(a²+1) /( (a³+a²)+(a+1))= (a-1)(a+1)(a²+1) / (a+1)(a²+1) =a-1.
2х²-2х+34=-6х²-34х+10
8х²+32х+24=0
х²+4х+3=0
D=16-12=4 √D=⁺₋2
х₁=(-4+2)/2=-1
х₂=(-4-2)/2=-3
Sint=-1/2
t=(-1)^n*arcsin(-1/2)+pi*n, n<u /><em />∈Z
t=(-1)^n+1*(pi/6)+pi*n, n∈Z.
A-b=0
a=b
3b+b=40
4b=40
b=10
b=a=10