I really need help with this questions no work necessary jus

I really need help with this questions, no work necessary, just the answers for each part a and b!!! Please Help!!!

Question 1

(a)

(b)

Solution

a)

i) not diagoniazable.

ii) last option :P = ((1,-4),(1,3)) D = ((5,0),(0,-2))

b)

i) 1st option

ii) 2nd option