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
View Solution FreeMore Determinant Questions
If A is a skew - symmetric matrix and n is an even positive integer, then An is...The system of linear equations x + y - z = 6, x + 2y - 3z = 14 and 2x + 5y - λz = 9 (λ ∈ R) has a unique...The minors of the elements of the first row in the determinant are-...The set of equations x - y + 3z = 2, 2x - y + z = 4, x - 2y + αz = 3 has -...If a, b, c are non zeros, then the system of equations (α + a) x + αy + αz = 0 αx + (α + b)y + ...