Verified answer

x + 2/x = 3

x² + 2 = 3x

x² - 3x + 2 = 0

delta

d² = 9 - 8 = 1

d = 1

x1 = (3 + 1)/2 = 2

x2 = (3 - 1)/2 = 1

2 + 2/2 = 3 ok

1 + 2/1 = 3 ok

pronto

nº=x

inverso=1/x

dobro= 2.1/x= 2/x

x+2/x=3

x²+2=3x

x²-3x+2=0

x= 3+_²V9-8/2

x=3+-1/2

x= 3+1/2= 2

x=3-1/2=1