<span>(с² – b)²– (с²- 1)(с² + 1) + 2bс²=с⁴-2bc²+b²-c⁴+1+2bc²=b²+1</span>
(7-6y-4)(7-6y+4)=0
(3-6y)(11-6y)=0
3-6y=0
6y=3
t=0,5
11-6y=0
6y=11
y=11/6
![log_x(2x-1)](https://tex.z-dn.net/?f=log_x%282x-1%29)
{x>0 {x>0 {x>0
{x≠1 => {x≠1 => {x≠1 => x∈(0,5;1)U(1;+∞)
{2x-1>0 {2x>1 {x>0,5
![log_{x-1}(x+1)](https://tex.z-dn.net/?f=log_%7Bx-1%7D%28x%2B1%29)
{x-1>0 {x>1
{x-1≠1 => {x≠2 => x∈(1;2)U(2;+∞)
{x+1>0 {x>-1