completing the square

Draw "a" number of models

Divide "b" by number of diagonal boxes

Find the length and width of your perfect square

Multiply to find your last square

Add these values together

What value do you add/subtract to this to get your "c" value?

Move the "c" value over to combine with the y

Factor out the "a" value

Add "b/2" squared (should be positive)

Distribute the "a" value to see what to add/subtract to the left side

Combine like terms to find the "k" value