DeterminantHard

Question

then x is equal to -

Options

A.-1
B.2
C.1
D.No value of x

Solution



On comparing
x2 + x = 0 ⇒ x = 0, - 1            x - 1 = - 2 ⇒ x = - 1
- x + 4 = 5 ⇒ x = - 1               x + 2 = 1 ⇒ x = - 1
Hence the value of x is - 1.

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