Question

Решить дз номер 1,2,3,4,5,6,7

Answer 1

$frac{x}{x+2} + frac{x+2}{x-2} = frac{8}{x^2-4} |*(x^2-4); x(x-2)+(x+2)=8;x^2-x-6=0$
$D= 1-4*(-6)=25; sqrt{D} =5; x_{1}= frac{1+5}{2} = 3; x_{2}= frac{1-5}{2} =-2$