SOLUTION: I need help with this. I don't know where to begin. Factor: -1x^2+6xy+9y^2

Question 48519: I need help with this. I don't know where to begin.
Factor: -1x^2+6xy+9y^2
Found 2 solutions by checkley71, cowess:
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
using the quadratic equation x=[(-b+/-sqrt(b~2-4ac)]/2a

we get (x-7.2426y)(x+1.2426y)
Answer by cowess(34) (Show Source): You can put this solution on YOUR website!
Two ways of doing this, I think the second one will do better.
First way:
a trigonomial can be written like ax^2+bx+c
f(x)=-1x^2+6xy+9y^2
a=-1
b=6y
c=9y^2
if f(x)=0

Second way:

=
=
=
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