Question

x+4=5/x Помогите решить уравнение

Answer 1

Ответ:
x+4=5/x   |*x
x(x+4)=5
x^2+4x=5
x^2+4x-5=0
D=4^2+5*4=20+16=36
x1=(-4+6)/2=2/2=1
x2=(-4-6)/2=-5

Answer 2

x+4=5/x
х (4+х) = 5
4х + х^2= 5
4х + х^2 - 5 = 0
4^2 + 5×4= 20 + 16 = 36
х1 = (6-4) ÷ 2 = 1
х2 = (-4-6) ÷ 2= -5