Curious3141 I hope I didn't offend you, if I did it, I'm sorry.
Thanks everyone for being patience. I think now I learned what I wanted to know.
Thank you everyone.
No, by double, I meant: example: x_1=3\;\;,\;\;x_2=7 just example, not twins or the same but two different, sorry for that.
"Terrible question??" let's see if you understand it in my Language.!
Sa duhet të jetë parametri a ashtuqë ekuacioni ax^2-4a+4=0 te kete dy zgjidhje te ndryshme...
Homework Statement
How should be the value of a so quadratic equation ax^2-4x+4=0 to have double solutions?
A)\;\;2
B)\;\;1
C)\;-1
D)\;-2
Homework Equations
The Attempt at a Solution
D=b^2-4ac
If:
D>0\;\;\rightarrow\; {x_1,x_2}\;\rightarrow\;\text{double solutions.}...