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Evalute the determinants in queations 1 ...

Evalute the determinants in queations 1 and 2 :
If `|{:(x,2),(18,x):}|=|{:(6,2),(18,6):}|`, then x is equal to :
(a) 6
(b) `+-6`
( c) -6
0

A

`6`

B

`+-6`

C

`-6`

D

`6,6`

Text Solution

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If [{:(x,2),(18,x):}]=[{:(6,2),(18,6):}] , then 'x' is equal to +-6 .

Evalute the determinants in queations 1 and 2 : Find the values of x, if (i) |{:(2,4),(5,1):}|=|{:(2x,4),(6,x):}| (ii) |{:(2,3),(4,5):}|=|{:(x,3),(2x,5):}|

Knowledge Check

  • If |{:(x,12),(3,x):}|=|{:(6,18),(2,6):}| , then value of 'x' is

    A
    `+-4`
    B
    `+-6`
    C
    `+-8`
    D
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  • If |(x,2),(18,x)| = |(6,2),(18,6)| , then the value of x is:

    A
    `overset""+-2`
    B
    `overset""+-4`
    C
    `overset""+-6`
    D
    `overset""+-8`

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