Solving Equation with symbol-coefficients

Questions
1

Hello,
i have a simple example, which doesnt work in my mathematica student version:
I try to solve:

Solve[ax^2+bx+c==0,x]

but i just get the results {}
What do i have to do?

Thanks and kind regards

2

Hi Sven, try separating the ax to a x and bx to b x (put a space between them).

In[238]:= Solve[a x^2 + b x + c == 0, x]

Out[238]= {{x -> (-b - Sqrt[b^2 - 4 a c])/(
   2 a)}, {x -> (-b + Sqrt[b^2 - 4 a c])/(2 a)}}

Paul

3

thx a lot, it works now.

kind regards