SOLUTION: complete the square x^2+10x+9=0

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: complete the square x^2+10x+9=0      Log On


   



Question 872208: complete the square x^2+10x+9=0
Found 2 solutions by ewatrrr, mananth:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
(x+5)^2 - 25 + 9 = 0
(x+5)^2 - 16 = 0

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+10x+9=0
x^2++10x+25 -25+9=0
(x+5)^2 = 16
take the square root
(x+5) = +/- 4
x = -5-4 OR -5+4
x = -9 OR -1