Question 843972
Is it x^2+4x-5=0 (Red) or x^2-4x-5=0 (Green)?
{{{graph(300,300,-6,6,-6,6,x^2+4x-5,x^2-4x-5)}}}
Either way you can easily tell where the functions cross the x-axis.
Those are solutions to the equation.
Plug them into the equation to verify.