Question

who is good at completing squares? i need one on one help

Answer 1

\[x^2+6x=1=0\]
\[x^2+6x=-1\]
\[(x+3)^2=-1+3^3=8\]
\[x+3=\pm\sqrt{8}\]
\[x=-3\pm\sqrt{8}\] is an example of solving a quadratic using that method

Answer 2

completeing a square is intuitively a geometric concept:

x^2 + 6x + ______
\begin{array}c
x^2&x&x&x\\
x&1&2&3\\
x&4&5&6\\
x&7&8&9\\
\end{array}
x^2 + 6x + "9" is a complete square

this concept gets us to the algebraic method; take the number of "x"s that are added on and divide them in half

6/2 = 3

now we square that value to determine how to "complete" our square:

3^2 = 9

Answer 3

lost.. at which part?

Answer 4

where is your question ?