bonjour
f (x) = ( 3 x - 14 ) / ( x - 4)
( 3 x - 14 ) /( x - 4) = 2
( 3 x - 14) / ( x -4) - 2 ( x - 4) /( x - 4 ) = 0
(3 x - 14) / (x - 4) - (2 x - 8 )/ (x - 4 ) = 0
(3 x - 14 - 2 x + 8 ) / ( x - 4) = 0
(x - 6 ) / ( x - 4) = 0
x - 6 = 0 pour x = 6
x - 4 = 0 pour x = 4 = VI
S ( 6 )
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bonjour
f (x) = ( 3 x - 14 ) / ( x - 4)
( 3 x - 14 ) /( x - 4) = 2
( 3 x - 14) / ( x -4) - 2 ( x - 4) /( x - 4 ) = 0
(3 x - 14) / (x - 4) - (2 x - 8 )/ (x - 4 ) = 0
(3 x - 14 - 2 x + 8 ) / ( x - 4) = 0
(x - 6 ) / ( x - 4) = 0
x - 6 = 0 pour x = 6
x - 4 = 0 pour x = 4 = VI
S ( 6 )