Question

10/x^2-100+x-20/x^2+10x-5/x^2-10x=0

Answer 1

Ответ:

x = 15

Объяснение:

$\frac{10}{(x-10)(x+10)} + \frac{x-20}{x(x+10)} - \frac{5}{x(x-10)} = 0\\\\10x + (x - 20)(x - 10) - 5*(x + 10) = 0\\10x + x^2 - 30x + 200 - 5x - 50 = 0\\x^2 - 25x + 150 = 0\\\\x_{1} * x_{2} = 150\\x_{1} + x_{2} = 25\\x_{1} = 10, x_{2} = 15$

10^2 - 100 = 0

Ответ :15