Answer:
9 50
10 69
Step-by-step explanation:
M^2 = M*M
= 2 5 * 2 5
1 8 1 8
= (2*2) + (5*1) (2*5) + (5*8) ..rows of the 1st matrix * column of 2nd matrix
(1*2) + (8*1) (1*5) + (8*8)
= 4+5 10+40
2+8 5+64
= 9 50
10 69
I am sorry i cannot solve the 2 one but i could solve the 1st one
Hope this helps
1) 7
2) 5
3) 27.5
hope this helped I put the answers in the order that you wrote them on here(:
10x10= 100
10x10x10=1000
100+1000=10,000