precalculus matrices

Question

Let

A =	4	1
0	5
and   B =	3	−2
2	1

. 

(a) Compute (A + B)².

(A + B)2 =

(b) Compute A² + 2AB + B².

A2 + 2AB + B2 =

(c) From the results of parts (a) and (b), conclude that in general, (A + B)²  ? = ≠ A² + 2AB + B².

Answer 1

a=4105

b=3-221

(4105+(3-221))^2=(4105-218)^2=3887^2=15,108,769