Question

Алгебра помогите (2)​

Answer 1

Пусть x^2=y.

2)у^2-5х+6=0

у1=3,у2=2

х^2=3》х=sqrt3

x^2=2》x=sqrt2

3)y^2-8x-9=0

y1=9,y2=-1

x^2=9》x=+-3

x^2=-1》x=+-i