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  • F. If x = and y =(i) x - y = y - x, then verify that:(ii) -(x + y) = (-x) + (-y).?

F. If x = and y =(i) x - y = y - x, then verify that:(ii) -(x + y) = (-x) + (-y).?

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Solution: 

Given  x = y —  ( 1 )

Varify that    x - y = y - x   —   ( 2)        &  - ( x + y ) = ( - x ) +  ( - y )    —   (  3 )

From Equation  1 & 2 

x - x  = x - x  because x = y

From Equation 1 & 3 we get 

LHS= RHS   

Hence proved

 

Posted by

Deependra Verma

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