Work Step by Step
$x^2-2x-3 = x^2+x - 3x -3 = x(x+1)-3(x+1)=(x-3)(x+1)=0$ Either x-3=0 that gives x=3 or x+1=0 that gives x=-1
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.