SOLUTION: 6) Complete the square x2 – 12x 7) Complete the square x2 – 2x = 8 8) Complete the square x2 – 5x = –6

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: 6) Complete the square x2 – 12x 7) Complete the square x2 – 2x = 8 8) Complete the square x2 – 5x = –6       Log On


   

Question 294776: 6) Complete the square x2 – 12x
7) Complete the square x2 – 2x = 8
8) Complete the square x2 – 5x = –6

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
6) Simply take half of -12 (the x coefficient) to get -6 and square it to get 36. Now add and subtract this value to get x%5E2-12x%2B36-36. From here, factor x%5E2-12x%2B36 to get %28x-6%29%5E2. So x%5E2-12x%2B36-36=%28x-6%29%5E2-36 which means that x%5E2-12x=%28x-6%29%5E2-36