bonsoir pouvez vous m’aider pour factoriser au maximum ces expressions ?
1) x²-4x
2) 2x(x+1) - 4(x+1)
3) (x+2) (x-1) + (3x+5) (x+2)
4) (3x+1) (x+4) - (2x-5) (x+4)
1) x²-4x
2) 2x(x+1) - 4(x+1)
3) (x+2) (x-1) + (3x+5) (x+2)
4) (3x+1) (x+4) - (2x-5) (x+4)
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Bonsoir
1) x²-4x = x ( x - 4 )
2) 2x(x+1) - 4(x+1) = ( x + 1 ) ( 2 x - 4 )
3) (x+2) (x-1) + (3x+5) (x+2) = ( x + 2 ) ( x - 1 + 3 x + 5 ) = ( x + 2 ) ( 4 x + 4 )
4) (3x+1) (x+4) - (2x-5) (x+4) = ( x + 4 ) ( 3 x + 1 - 2 x + 5 ) = ( x + 4 ) ( x + 6 )