SOLUTION: solve using the completing the square method: 25x^2-30xy+9y^2 I tried solving it and it turned out like this: 25x^2-30xy=-9y^2 25x^2-30xy+(-15y)^2=-9y^2+225y^2 (5x-15y)^2=21

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: solve using the completing the square method: 25x^2-30xy+9y^2 I tried solving it and it turned out like this: 25x^2-30xy=-9y^2 25x^2-30xy+(-15y)^2=-9y^2+225y^2 (5x-15y)^2=21      Log On


   

Question 1090669: solve using the completing the square method:
25x^2-30xy+9y^2
I tried solving it and it turned out like this:
25x^2-30xy=-9y^2
25x^2-30xy+(-15y)^2=-9y^2+225y^2
(5x-15y)^2=216y^2
Did I do anything wrong?
Answer by ikleyn(52778) About Me  (Show Source):
You can put this solution on YOUR website!
.
= (5x-3y)^2.