SOLUTION: What number would be placed in each of the empty blanks to complete the square? x^2+7x+ =12+ .

Algebra ->  Square-cubic-other-roots -> SOLUTION: What number would be placed in each of the empty blanks to complete the square? x^2+7x+ =12+ .      Log On


   

Question 202029: What number would be placed in each of the empty blanks to complete the square? x^2+7x+ =12+ .
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Simply take half of the x-coefficient 7 to get 7%2F2 and square that result to get %287%2F2%29%5E2=49%2F4


So you must add 49%2F4 to both sides to get

x%5E2%2B7x%2B49%2F4=12%2B49%2F4