Hi I have a problem in Diagonalizability concept.

A= [7 -4 0

5 -5 0

6 -6 3]

A is 3x3 matrix.

I got eigen values as 3, 3, -1

Need to find eigen vectors and matrix D, where [D= Q^(-1)AQ]

D being the diagonal matrix.

If there is any easy methodology plz suggest

Need help from eigen vectors onwards.

Thanks in advance.