bonjour
A: x² - 16 = x² - 4²
a² - b² = (a+b) (a-b)
A = (x+4) (x-4)
B : x² - 1 = x² - 1²
= (x+1) (x-1)
C: x²+2x + 1 = x² + 2x + 1²
a² +2ab +b² = (a+b)²
= (x+1)²
D: 16x² - 4 = (4x)² - 2²
voir A et B
E: x² - 10x + 25 = x² - 2*5*x + 5²
a² - 2ab + b² = (a-b)²
= (x-5)²
F: 4x² - 49 = (2x)² - 7²
G: 9x² - x
= x (9x - 1)
H: (x-4) (x+1) + x² - 1 = (x-4) (x+1) + x² - 1²
= (x-4) (x+1) + (x+1) (x-1)
= (x+1) (x-4+x-1) tu finis
Bonjour,
Factorisez les expressions suivante:
A: x² - 16
A: (x-4)(x+4)
B : x² - 1
B: (x-1)(x+1)
C: x²+2x + 1
C: (x+1)²
D: 16x² - 4
D: (4x-2)(4x+2)
E: x² - 10x + 25
E: (x-5)²
F: 4x² - 49
F: (2x-7)(2x+7)
G: x(9x-1)
H: (x-4) (x+1) + x² - 1
H: (x-4)(x+1)+(x²-1)
H: (x-4)(x+1)+(x-1)(x+1)
H: (x+1)(x-4+x-1)
H: (2x-5) (x+1)
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bonjour
A: x² - 16 = x² - 4²
a² - b² = (a+b) (a-b)
A = (x+4) (x-4)
B : x² - 1 = x² - 1²
= (x+1) (x-1)
C: x²+2x + 1 = x² + 2x + 1²
a² +2ab +b² = (a+b)²
= (x+1)²
D: 16x² - 4 = (4x)² - 2²
voir A et B
E: x² - 10x + 25 = x² - 2*5*x + 5²
a² - 2ab + b² = (a-b)²
= (x-5)²
F: 4x² - 49 = (2x)² - 7²
voir A et B
G: 9x² - x
= x (9x - 1)
H: (x-4) (x+1) + x² - 1 = (x-4) (x+1) + x² - 1²
= (x-4) (x+1) + (x+1) (x-1)
= (x+1) (x-4+x-1) tu finis
Bonjour,
Factorisez les expressions suivante:
A: x² - 16
A: (x-4)(x+4)
B : x² - 1
B: (x-1)(x+1)
C: x²+2x + 1
C: (x+1)²
D: 16x² - 4
D: (4x-2)(4x+2)
E: x² - 10x + 25
E: (x-5)²
F: 4x² - 49
F: (2x-7)(2x+7)
G: 9x² - x
G: x(9x-1)
H: (x-4) (x+1) + x² - 1
H: (x-4)(x+1)+(x²-1)
H: (x-4)(x+1)+(x-1)(x+1)
H: (x+1)(x-4+x-1)
H: (2x-5) (x+1)