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
-> 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
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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(52779) (Show Source):
