Question 888747
{{{x^2+2x-3=0}}}


Use the term, {{{(2/2)^2=1}}} to add to both sides.


Study this lesson for better understanding and to learn the whole process.
<a href="http://www.algebra.com/tutors/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev">Completing the Square to Solve General Quadratic Equation </a>