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|[5,-2] , [3,1]|=...

`|[5,-2] , [3,1]|=`

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CHETAN PUBLICATION-LINEAR EQUATIONS IN TWO VARIABLES -Problems for practice (Based on practice Set 1 . 3) Find the value of following determinans :
  1. x+2y=5,2x+y=-2

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  2. 4x-y=-5,2x-y=-1

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  3. |[5,-2] , [3,1]|=

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