Question

(x^2+1)/5=2x/5
Помогите, по-братски)))

Answer 1

X+2+1=2x:5
X+2x=5-2-1
3x=3
X=3:3
X=1

Answer 2

$frac{ {x}^{2} + 1}{5} = frac{2x}{5} \ {x}^{2} + 1 = 2x \ {x}^{2} - 2x + 1 = 0$
$D_1 = k^{2} - ac = 1 - 1 = 0\x=frac{-kpm sqrt{D1}}{a}=frac{1}{1} = 1$
Ответ: $x=1$