bonjour
x² ( x - 1.5 ) - ( x - 1.5 )
= x ³ - 1.5 x² - x + 1.5
x² ( x - 1 .5 ) - ( x - 1.5 )
= ( x - 1.5 ) ( x ² - 1 )
= ( x - 1.5 ) ( x - 1 ) ( x + 1 )
( x - 1.5 ) ( x - 1 ) ( x + 1 ) = 0
x = 1.5 ou 1 ou - 1
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bonjour
x² ( x - 1.5 ) - ( x - 1.5 )
= x ³ - 1.5 x² - x + 1.5
x² ( x - 1 .5 ) - ( x - 1.5 )
= ( x - 1.5 ) ( x ² - 1 )
= ( x - 1.5 ) ( x - 1 ) ( x + 1 )
( x - 1.5 ) ( x - 1 ) ( x + 1 ) = 0
x = 1.5 ou 1 ou - 1