DeterminantHard

Question

If ᐃ1 = , ᐃ2 = , then the value of ᐃ1 - ᐃ2 is

Options

A.x + y/2 + z
B.2
C.0
D.3

Solution

ᐃ1 = = 4
ᐃ2 = = 4
C1 ↔ C1 followed by
ᐃ2 =
R1 ↔ R2 followed by
ᐃ2 = ᐃ1
ᐃ1 - ᐃ2 = 0

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