MATLAB: Am I not getting two values for the output

functionsMATLAB

I am trying to write a function that gives me the roots of a quadratic function (ax^2+bc+c), but my vurrent function only gives me a single answer and I cant figure out why.
function [y1,y2] = QuadFor(x1,x2,x3)
y1 = -x2 + [sqrt(x2^2 – 4*x1*x3)] / (2*x1);
y2 = -x2 – [sqrt(x2^2 – 4*x1*x3)] / (2*x1);
end;

Best Answer

An example:
x1= 2;
x2=4;
x3=6;
[y1,y2] = QuadFor(x1,x2,x3)  %function call
 
function [y1,y2] = QuadFor(x1,x2,x3)   %function definition
   y1 = -x2 + [sqrt(x2^2 - 4*x1*x3)] / (2*x1);
   y2 = -x2 - [sqrt(x2^2 - 4*x1*x3)] / (2*x1);
end
command window:
>> COMMUNITY
y1 =
      -4        + 1393/985i  
y2 =
      -4        - 1393/985i  
>>
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