Question 1057634
<a href="https://www.youtube.com/watch?v=MD4AiN1Gsmc">How to change quadratic equation from general form into standard form  (same as "vertex" form) - video</a>



On yours, you should factorize the right hand side and then complete the square inside the parentheses; but be sure to adjust form this, to undo it correctly OUTSIDE the parentheses.