Question 26950: Thank you for your help! I have now come upon another type of equation on this worksheet that I don't understand. example: 25x^2-15xy+2y^2 I am not sure how to factor using trail and error on this one because of all the variables.
Answer by elima(1433)   (Show Source):
You can put this solution on YOUR website! Solve just as if you only had 1 varialbe;
25x^2-15xy+2y^2
There are 3 givens;
25 is a perfect square, there is the variablr x and y so they both are in the factor, and since the last sign is + and the first is -, you now both signs are going to be -;
(5x-_y)(5x-_y)
what two facots =2? 1,2
(5x-y)(5x-2y)
Hope this helps
=)
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