Question

If a= [1 -2 ; 3 -4] then compute a^2 - 5a + 3i

Answer 1

Answer:

If a is a matrix than answer is

Step-by-step explanation:

a² = [1 -2 ; 3 -4] [1 -2; 3 -4]

[(1-6) (2+8); (3-12) (6+16) ]

[-5 10; -9 22]

5a = 5[1 -2 ; 3 -4]

[5 -10 ; 15 -20 ]

3i = [3 0; 0 3 ]

a²-5a +3i = [-7 20; -24 45]