SOLUTION: 5-5 COMPLETING THE SQUARE Solving a quadratic equation if the coefficient of x^2 is 1 X^2+6X+5=0

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: 5-5 COMPLETING THE SQUARE Solving a quadratic equation if the coefficient of x^2 is 1 X^2+6X+5=0      Log On


   

Question 191135: 5-5 COMPLETING THE SQUARE
Solving a quadratic equation if the coefficient of x^2 is 1

X^2+6X+5=0
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
X^2+6X+5=0
.
Start by isolating the x's to one side. Do this by subtracting 5 from both sides.
.
X^2+6X = -5
X^2+6X+__ = -5
Fill the blank by taking 1/2 of the 'b' coefficient and squaring it:
X^2+6X+9 = -5+9
(X+3)^2 = 4
Take the square root of both sides:
X+3 = 2
X = -1