How can i find the perfect square of 2x^2-10x-7? I know how to do it is x^2 is only one, but i don't know how to solve it if it has more than 1. Solution has to be a perfect square
Here he factored a 2 out since you must have a coefficient of 1 in front of your squared term to complete the square
the 25/4 comes from taking the coefficient of the linear term divided by 2 and then squaring that value...so (5/2)^2=(25/4)...you then add (25/4) to what you have in parenthesis and subtract the same ammount that you added times the coefficient of your quadratic equation which in this case is two so subtract (25/2)...doing this makes it so that you are really adding zero to the equation but making it easy to factor
then you just factor the quadratic
I'm sure that is tuf to follow but i will have to figure out the 'pretty print' here
i looked up completing the square on google and usedthis site Completing the Square. Under EXAMPLE lets try a real example. I used the way he did it and ot the answer that way hence i got 25/4 on both sides