bonjour
( x - 2 ) ( 2 x + 1 ) = ( x - 2 )²
( x - 2) ( 2 x + 1 ) - ( x - 2 )² = 0
( x - 2 ) ( 2 x + 1 - x + 2 ) = 0
( x - 2 ) ( x + 3 ) = 0
x = 2 ou - 3
Bonjour,
Résoudre:
(x-2)(2x+1)=(x-2)²
(x-2)(2x+1)-(x-2)(x-2)= 0
(x-2)(2x+1-x+2)= 0
(x-2)(x+3)= 0
x-2= 0 ou x+3= 0
x= 2 x= -3
S= {2;-3 }
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Verified answer
bonjour
( x - 2 ) ( 2 x + 1 ) = ( x - 2 )²
( x - 2) ( 2 x + 1 ) - ( x - 2 )² = 0
( x - 2 ) ( 2 x + 1 - x + 2 ) = 0
( x - 2 ) ( x + 3 ) = 0
x = 2 ou - 3
Verified answer
Bonjour,
Résoudre:
(x-2)(2x+1)=(x-2)²
(x-2)(2x+1)-(x-2)(x-2)= 0
(x-2)(2x+1-x+2)= 0
(x-2)(x+3)= 0
x-2= 0 ou x+3= 0
x= 2 x= -3
S= {2;-3 }