Question

(x/(x+4))+(x/(x-4)) = 50 / 9

Answer 1

$frac{x}{x+4}+ frac{x}{x-4}= frac{50}{9} \ frac{x^2-4x+x^2+4x}{(x+4)(x-4)}= frac{50}{9} \ frac{2x^2}{(x+4)(x-4)}= frac{50}{9} \ x neq 4,x neq -4 \2x^2*9=50(x-4)(x+4) \ 18x^2=50(x^2-16) \ 18x^2=50x^2-800 \ -32x^2=-800 \ x^2=25 \ x_1= sqrt{25}=5 \ x_2=- sqrt{25}=-5$

Answer 2

Спасибо большое!

Answer 3

пожалуйста