A = 4 * 2x + 4 * 3y = 4 (2x+3y)
B = 7 * 7a - 7 * 8b = 7 (7a - 8b)
C = 6 * 4x + 6 * 5z - 6 * 3z = 6 (...
D = 15x * y + 15x * 2z = 15x (...
E = 2x* x + 2x* 4 = 2x (...
et F = 5xy * 5x - 5xy * 3y = 5xy (...
tu dois passer de ka + kb à k(a+b)
Réponse :
Bonjour,
A = 8x +12y
A = 4 * 2x + 4 * 3y
A = 4 (2x+3y)
B = 49a-56b
B= 7 * 7a - 7 * 8b
B = 7 (7a - 8b)
C = 24x+30y-18z
C = 6 * 4x + 6 * 5z - 6 * 3z
C = 6 (4x +5z -3z)
D = 15xy+30xz
D= 15x * y + 15x * 2z
D = 15x (y+2z)
E = 2x²+8x
E = 2x* x + 2x* 4
E = 2x (x+4)
F = 25x²y - 15xy²
F = 5xy * 5x - 5xy * 3y
F = 5xy (5x-3y)
Explications étape par étape :
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A = 4 * 2x + 4 * 3y = 4 (2x+3y)
B = 7 * 7a - 7 * 8b = 7 (7a - 8b)
C = 6 * 4x + 6 * 5z - 6 * 3z = 6 (...
D = 15x * y + 15x * 2z = 15x (...
E = 2x* x + 2x* 4 = 2x (...
et F = 5xy * 5x - 5xy * 3y = 5xy (...
tu dois passer de ka + kb à k(a+b)
Réponse :
Bonjour,
A = 8x +12y
A = 4 * 2x + 4 * 3y
A = 4 (2x+3y)
B = 49a-56b
B= 7 * 7a - 7 * 8b
B = 7 (7a - 8b)
C = 24x+30y-18z
C = 6 * 4x + 6 * 5z - 6 * 3z
C = 6 (4x +5z -3z)
D = 15xy+30xz
D= 15x * y + 15x * 2z
D = 15x (y+2z)
E = 2x²+8x
E = 2x* x + 2x* 4
E = 2x (x+4)
F = 25x²y - 15xy²
F = 5xy * 5x - 5xy * 3y
F = 5xy (5x-3y)
Explications étape par étape :