👤

48 : × : (×+2) = 1
×=?

Urgent. Dau coroană!


Răspuns :

48:x:(x+2)=1
48/x : (x+2)=1
x+2=48/x :1
x+2=48/x
(x+2)×x=48
x×x+2×x=48
x^2+2x-48=0
x^2+8x-6x-48=0
x×(x+8)-6×(x+8)=0
(x+8)×(x-6)=0

x+8=0
x=0-8
x= -8

una din solutii

x-6=0
x=0+6
x=6

a doua soluție