Question

9x^2-9x+2=0 решите)

Answer 1

Д=81-9*2*4=9

х=(9+3)/18=12/18=2/3

х=(9-3)/18=6/18=1/3

Answer 2

Решение:
9х² -9х+2=0
х1,2=(9+-D)/2*9
D=√(81-4*9*2)=√(81-72)=√9=3
х1,2=(9+-3)/18
х1=(9+3)/18=12/18=2/3
х2=(9-3)/18=6/18=1/3

Ответ: х=2/3; х2=1/3