Question

30/(х+2)+13/(х-2)=1,5 найдите корни уровнения

Answer 1

$frac{30}{x+2} + frac{13}{x-2} =1,5;x neq 2;-2 \ 30(x-2)+13(x+2)=1,5(x^{2}-4) \ 30x-60+13x+26=1,5x^{2}-6 \ 1,5x^{2}-43x+28=0 \ D=1849-168=1681;x_{1}=28;x_{2}= frac{2}{3}$