SOLUTION: How do I complete the square for m(x)=-x^2+6x-4? I tried dividing 6x by 2 and factored out -1 from x^2+6x. But how do you get the other number?

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: How do I complete the square for m(x)=-x^2+6x-4? I tried dividing 6x by 2 and factored out -1 from x^2+6x. But how do you get the other number?      Log On


   

Question 160236This question is from textbook College Mathematics
: How do I complete the square for m(x)=-x^2+6x-4?
I tried dividing 6x by 2 and factored out -1 from x^2+6x. But how do you get the other number? This question is from textbook College Mathematics

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
m(x)=-x^2+6x-4?
-x^2+6x=4
x^2-6x=-4
x^2-6x(+9)=-4(+9)
(x-3)(x-3)=5
x-3=sqrt5
x=3+sqrt5
x=3+2.236
x=5.236 answer.