Solve the following quadratic equation by factorization:
$\frac{x+1}{x-1}-\frac{x-1}{x+1}=\frac{5}{6}, x ≠1,-1$
Given:
Given quadratic equation is $\frac{x+1}{x-1}-\frac{x-1}{x+1}=\frac{5}{6}, x ≠1,-1$.
To do:
We have to solve the given quadratic equation by factorization.
Solution:
$\frac{x+1}{x-1}-\frac{x-1}{x+1}=\frac{5}{6}$
$\frac{(x+1)(x+1)-(x-1)(x-1)}{(x-1)(x+1)}=\frac{5}{6}$
$\frac{x^2+x+x+1-(x^2-x-x+1)}{x^2-1^2}=\frac{5}{6}$
$\frac{x^2+2x+1-x^2+2x-1}{x^2-1}=\frac{5}{6}$
$6(4x)=5(x^2-1)$ (on cross multiplication)
$24x=5x^2-5$
$5x^2-24x-5=0$
$5x^2-25x+x-5=0$
$5x(x-5)+1(x-5)=0$
$(5x+1)(x-5)=0$
$5x+1=0$ or $x-5=0$
$5x=-1$ or $x=5$
$x=-\frac{1}{5}$ or $x=5$
The roots of the given quadratic equation are $-\frac{1}{5}$ and $5$.  
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