SOLUTION: Please help me solve this equation: x^2+11x+21/4=0 It is called completing the square and has to do with solving quadratic equations.

Algebra ->  Square-cubic-other-roots -> SOLUTION: Please help me solve this equation: x^2+11x+21/4=0 It is called completing the square and has to do with solving quadratic equations.      Log On


   

Question 196863This question is from textbook McDougal Littell Algebra 1
: Please help me solve this equation: x^2+11x+21/4=0
It is called completing the square and has to do with solving quadratic equations. This question is from textbook McDougal Littell Algebra 1

Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2%2B11x%2B121%2F4%29-121%2F4%2B21%2F4=0
:
%28x%2B11%2F2%29%5E2-25=0--->%28x%2B11%2F2%29%5E2=25
:
x+11/2=5 and x+11/2=-5
:
x=-1/2 and x=-21/2