SOLUTION: Solve by completing the square. x^2 = 5x + 2 Is this right? My answer: 5+-√29/2 The middle between the 5 and √29 is suppose to be a plus sign over a minus sign

Algebra ->  Expressions-with-variables -> SOLUTION: Solve by completing the square. x^2 = 5x + 2 Is this right? My answer: 5+-√29/2 The middle between the 5 and √29 is suppose to be a plus sign over a minus sign      Log On


   

Question 83675: Solve by completing the square.
x^2 = 5x + 2
Is this right?
My answer:
5+-√29/2
The middle between the 5 and √29 is suppose to be a plus sign over a minus sign.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
I got something slightly different
x%5E2+=+5x+%2B+2
x%5E2+-+5x+=+2
Take 1/2 the coeffecient of x, square it, add to both sides
x%5E2+-5x+%2B+25%2F4+=+2+%2B+25%2F4
%28x+-+5%2F2%29%5E2+=+8%2F4+%2B+25%2F4
%28x+-+5%2F2%29%5E2+=+33%2F4
Take sqrt of both sides
x+-+5%2F2+=+sqrt%2833%29%2F2
x+=+%285+%2B-sqrt%2833%29%29+%2F+2 answer