You can
put this solution on YOUR website!x^2+9x+8=0
To complete the square, we need the digit in front of the x^2 term to be 1. All you have to do to complete the square is take half of the number in front of the x term, then square it and add/subtract it:
Now, the left hand side can be factored:
Which gives x=-1 or x=-8.
It is important to note that the factoring of the square will always be half of the original term in front of the x. E-mail me at enabla@gmail.com if you still have difficulty or would like it explained differently.
You can
put this solution on YOUR website!Well, the obvious answer is that 4 is a perfect square, while 2 and 6 are not. Having said that, the process you showed is not the one that I use.
Here's my process given
Move the constant term to the right:
Divide both sides by the lead coefficient (if it is already 1, you don't have to do anything)
Divide the coefficient on the 1st degree term by 2, and then square the result. Add that result to both sides of the equation.
Factor the left now that it is a perfect square.
Take the square root of both sides.
or
Add
to both sides.
Simplify.
Hope that helps.
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