Question

решите уравнение 2-9x^2=0

Answer 1

-9x^2+2=0
9x^2-2=0
D=0-4*9*(-2)=72
x1,2= +-Кор(72)/18
x1=3кор(8)/18= кор(8)/6
x2=-3кор(8)/18= -кор(8)/6

Answer 2

2-9x^2=0

-9x^2=-2

x^2=2/9

x^2=+-√2/3

x1=√2/3

x2=-(√2/3)