Compute the product a for the following pairs of matrices.
a. a = −1
1 0
b= −1
1 0

b. a = 0
0 −1
b= −1 0
0 1

c. a =

2 −
2

2

2
b= 0
0 4

d. a = 1
0 1
b= 0
0 2

e. a =
12

2
−
2
12
b=

2 −12
12

2

Plz which expression is equivalent to the expression below?

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