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Sagot :

VINS

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

INEQUATION

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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