Réponse :
bonjour
Explications étape par étape
(3x+8)(x-1)-1+x
(3x+8)(x-1)+(x-1)
(x-1)((3x+8)+1)
(x-1)(3x+9)
(4x-3)²-25x²
(4x+3)²-(5x)²
((4x+3)+(5x))((4x+3)-5x))
(4x+3+5x)(4x+3-5x)
(9x+3)(3-x)
x²-4-(x+2)²
(x²-4)-(x+2)²
x²-4= x²-2²
(x+2)(x-2)
(x+2)(x-2)-(x+2)²
(x+2)((x-2)-(x+2))
(x+2)(x-2-x-2)
(x+2)(-4)
Réponse:
Salut
Explications étape par étape:
B = (3x + 8)(x - 1) -1 + x
= (x - 1)(3x + 8 + 1)
= (x - 1)(3x + 9)
=(x - 1) 3(x + 3)
B = 3(x-1)(x+3)
C = (4x - 3)² - 25x²
= (4x - 3 - 5x)(4x - 3 + 5x)
= (-x - 3)(9x - 3)
= (-x - 3) 3(3x-1)
C = 3(-x - 3)(3x - 1)
D = x² - 4 - (x + 2)²
= (x - 2)(x + 2) - (x + 2)²
= (x + 2)(x - 2(x + 2))
=(x + 2)(x -2 -x -2)
=(x + 2)(-4)
D = -4(x+2)
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Réponse :
bonjour
Explications étape par étape
(3x+8)(x-1)-1+x
(3x+8)(x-1)+(x-1)
(x-1)((3x+8)+1)
(x-1)(3x+9)
(4x-3)²-25x²
(4x+3)²-(5x)²
((4x+3)+(5x))((4x+3)-5x))
(4x+3+5x)(4x+3-5x)
(9x+3)(3-x)
x²-4-(x+2)²
(x²-4)-(x+2)²
x²-4= x²-2²
(x+2)(x-2)
(x+2)(x-2)-(x+2)²
(x+2)((x-2)-(x+2))
(x+2)(x-2-x-2)
(x+2)(-4)
Réponse:
Salut
Explications étape par étape:
B = (3x + 8)(x - 1) -1 + x
= (x - 1)(3x + 8 + 1)
= (x - 1)(3x + 9)
=(x - 1) 3(x + 3)
B = 3(x-1)(x+3)
C = (4x - 3)² - 25x²
= (4x - 3 - 5x)(4x - 3 + 5x)
= (-x - 3)(9x - 3)
= (-x - 3) 3(3x-1)
C = 3(-x - 3)(3x - 1)
D = x² - 4 - (x + 2)²
= (x - 2)(x + 2) - (x + 2)²
= (x + 2)(x - 2(x + 2))
=(x + 2)(x -2 -x -2)
=(x + 2)(-4)
D = -4(x+2)