write a matlab command to find th roots of: ax^2+bx+c=0

write a MATLAB commads to find the roots of : ax^2+bx+c=0 , where a,b and c are constants?

Answer 1

[jahanzaib ahmad]

a=1;
b=2;
c=3;
x1 = -b +(sqrt((b^2)-(4ac)/(2a))x;
x2=-b-(sqrt((b^2)-(4ac)/(2a));
disp(x1);
disp(x2);

[jahanzaib ahmad]

a=1;
b=2;
c=3;
x1 = -b +(sqrt((b.^2)-(4.*a.*c)))/(2.*a);
x2=-b -(sqrt((b.^2)-(4.*a.*c)))/(2.*a);
disp(x1);
disp(x2);

Answer 2

[madhan ravi]

help roots
doc roots
help poly2sym
doc poly2sym