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Rafiki
@Rafiki
April 2019
2
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Factoriser les équations suivantes :
(x-2)²-(2x+5)²
(3-x)²-(3x+2)²
(-x+4)²-(6x-1)²
(3x+2)²-(2x+7)²
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jujudu33
((x-2)-(2x+5))((x-2)+(2x+5)
((3-x)-(3x+2))((3-x)+(3x+2))
((-x+4)-(6x-1))((-x+4)+(6x-1))
((3x+2)-(2x+7))((3x+2)+(2x+7))
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charlotte49
(x-2)²-(2x+5)² = [ (x-2) -( 2x+5) ] [(x -2 ) + (2x +5) ]
= [ x-2 - 2x -5 ] [ x - 2 +2x +5 ]
= ( - x -7 ) ( 3x +3 )
ou
= ( -x -7) 3(x+1)
A² -B² = ( A-B) (A + B)
tu continues avec les autres exercices et tu réduis , bon courage
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Lista de comentários
((3-x)-(3x+2))((3-x)+(3x+2))
((-x+4)-(6x-1))((-x+4)+(6x-1))
((3x+2)-(2x+7))((3x+2)+(2x+7))
= [ x-2 - 2x -5 ] [ x - 2 +2x +5 ]
= ( - x -7 ) ( 3x +3 )
ou = ( -x -7) 3(x+1)
A² -B² = ( A-B) (A + B)
tu continues avec les autres exercices et tu réduis , bon courage