Question

Помогите,очень срочно!!!!!!!!!!

Answer 1

$frac{5}{x^2-10x}-frac{x-20}{x^2+10x}-frac{10}{x^2-100}=0\\frac{5}{x(x-10)}-frac{x-20}{x(x+10)}-frac{10}{(x-10)(x+10)}=0\\frac{5x+50-(x-20)(x-10)-10x}{x(x-10)(x+10)}=0; ,; ; frac{5x+50-x^2+30x-200-10x}{x(x-10)(x+10)}=0\\frac{-x^2+25x-150}{x(x-10)(x+10)}=0; ,; ; ODZ:; ; xne 0,; xne -10,; xne 10\\x^2-25x+150=0; ,; ; D=25\\x_1=frac{25-5}{2}=10; ,; ; x_2=frac{25+5}{2}=15$