3+10 деленое ** x равно x

Question

3+10 деленое на x равно x

Answer 1

3 + ( 10 / Х ) = X 
3X + 10 = X^2 
X^2 - 3X - 10 = 0
D = 9 + 40 = 49 ; √D = 7
X1 = ( 3 + 7) : 2 = 5 
X2 = ( - 4 ) : 2= ( - 2 )

Answer 2

(3+10)/x=x
(3+10-x^2)/x=0
x≠0

13-x^2=0 
x^2=13
x=+-√13