Please help me if you can.....big donation if it gets done

1)find the eigenvalues for the matrix

A = 1 2 1

0 3 1

0 5 -1

B) for each eigenvalue found above find a basis for the eigenspace

C)join all basis vectors from B) into a single set. does this set form a basis R^3? why or why not?

D)use C to express the v= [4 2 8] as a linear combination of eigenvectors. then find A15 v without having to work too hard.

2) repeat a-c for the matrix

B= 1 5 1

0 3 -1

0 1 1