DeterminantHard
Question
Let ᐃ = 
, then
, thenOptions
A.a + b is a factor of ᐃ
B.a + 2b is a factor of ᐃ
C.2a + 3b is a factor of ᐃ
D.a2 is a factor of
Solution
ᐃ = 
= a
R2 → R2 - R1
= a(a + b)
= a(a + b) 
= a(a + b)
= a (a + b) (2a + 3b - a - b) = a(a + b) (a + 2b)
= a
R2 → R2 - R1 = a(a + b)
= a(a + b) = a(a + b)
= a (a + b) (2a + 3b - a - b) = a(a + b) (a + 2b)Create a free account to view solution
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