STEP 4:

y = ( x^2 - 6x + 9 ) + 3 ___ ... ( -3 )^2 = 9

STEP 5:

y = ( x^2 - 6x + 9 ) + 3 - 9
 

STEP 6:

y = ( x - 3 )^2 - 6 ... the -3 is the circled guy

I'll let you check it... and graph it!

 


YOUR TURN:

Complete the square:

y = x^2 - 4x + 5

y = x^2 + 6x + 5