ink cartridges for Canon Pixma printer (Burbage LE10)

Hello, I bought an entire double set of cartridges for my Canon Pixma, but it turns out they are the wrong ones for my model.
If you are interested in saving some money, these are the specs:
4 black XL C-550, 2 of each colour C-551.
My Pixma is the MG5750, so I can already tell you that if you have this same model, the cartridges won't work.
Barbara