Question

What are the methods in solving a quadratic equation by completing the squares?

Answer 1

ask satellite..it's his fave topic

Answer 2

very funny

Answer 3

would you like to do an example?

\[x^2+6x-2=0\]
\[x^2+6x=2\]
\[(x+3)^2=2+3^2=2+9=11\]
\[x+3=\pm\sqrt{11}\]
\[x=-3\pm\sqrt{11}\]

Answer 4

http://www.purplemath.com/modules/solvquad3.htm

Answer 5

if you repeat the method with
\[ax^2+bx+c=0\] you get
\[x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]

Answer 6

Totally forgot that this is how you get the last formula :-) Good to come here