Can someone please help me with this factoring? Thanks!

Factor 3x^2-7xy+2y^2

Factor 12x^2+8x-15

2 answers

3x^2 -7xy +2y^2 = (3x -y)(x - 2y)

Now you try the other one.
Could you please tell me how you did the first one? I don't really want the answers. I just want help. :)