bonjour
a
2 x + 6
2 x² - x + 2 x - 1 = 2 x² + x - 1
9 x² - 6 x +1
4 x² - 25
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f( x) = ( - 7 x + 1 + 2 x - 3 ) ( - 7 x + 1 - 2 x + 3 )
f (x) = ( - 5 x + 2 ) ( - 9 x + 4 )
g (x) = ( 2 x - 3 ) ( x +1 + 4 x + 2 )
g (x) = ( 2 x - 3 ) ( 5 x + 3 )
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( 1 + 2 x ) ( 8 - x ) = 0
x = - 1/2 ou 8
5 x² - x = 0
x ( 5 x - 1 ) = 0
x = 0 ou 1/5
( 3 x + 1 ) ² = x²
( 3 x + 1 - x ) ( 3 x + 1 + x ) = 0
( 2 x + 1 ) ( 4 x + 1 ) = 0
x = - 1/2 ou - 1/4
- x / ( 2 - x ) = 3
- x = 6 - 3 x
- x + 3 x = 6
2 x = 6
x = 3
termine, tu mets au même dénominateur
