SOLUTION: I am trying to complete the square for this equation x^2=5x+2 Options on my test are a.)5+sqrt20/2 b.)5+sqrt29/4 c.)5+sqrt33/4 d.)5+sqrt33/2 I am not even close to any of t

Algebra ->  Radicals -> SOLUTION: I am trying to complete the square for this equation x^2=5x+2 Options on my test are a.)5+sqrt20/2 b.)5+sqrt29/4 c.)5+sqrt33/4 d.)5+sqrt33/2 I am not even close to any of t      Log On


   

Question 89519This question is from textbook algebra
: I am trying to complete the square for this equation
x^2=5x+2
Options on my test are
a.)5+sqrt20/2
b.)5+sqrt29/4
c.)5+sqrt33/4
d.)5+sqrt33/2
I am not even close to any of these options. please help This question is from textbook algebra

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
none of the answers seem to be correct

x^2=5x+2 ... x^2-5x=2 ... x^2-5x+(-5/2)^2=2+(-5/2)^2 ... (x-(5/2))^2=33/4 ... x-(5/2)=+-sqrt(33/4) ... x=(5/2)+-sqrt(33/4)

answer d would work with some added parentheses ... (5/2)+-sqrt(33/4)=(5+-sqrt33)/2