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Lapetiite
@Lapetiite
January 2021
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MATHS FACTORISER (EX DE SECONDE) Bonjour, je dois factorisé ces expressions, merci d'avance pour votre aide !
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trudelmichel
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Bonjour,
N=36x²-1=(6x)²-1²=(6x+1)(6x-1)
O=(4x²-9)-(x+5)(2x-3)
4x²-8=(2x)²-3²=(2x+3)(2x-3)
O=(2x+3)(2x-3)-(x+5)(2x-3)
O=(2x-3)((2x+3)-(x+5)
O=(2x-3)(x-2)
P=x²+6x+9= x2+2(3x)+3²=(x+3)²
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Bonjour,N=36x²-1=(6x)²-1²=(6x+1)(6x-1)
O=(4x²-9)-(x+5)(2x-3)
4x²-8=(2x)²-3²=(2x+3)(2x-3)
O=(2x+3)(2x-3)-(x+5)(2x-3)
O=(2x-3)((2x+3)-(x+5)
O=(2x-3)(x-2)
P=x²+6x+9= x2+2(3x)+3²=(x+3)²