Bonjour
A = -(-9x + 10)(4x - 3) - (4x - 3)
A = -(4x - 3)(-9x + 10 + 1)
A = -(4x - 3)(-9x + 11)
B = 64x^2 - 36
B = (8x)^2 - 6^2
B = (8x - 6)(8x + 6)
B = 2(4x - 3) * 2(4x + 3)
B = 4(4x - 3)(4x + 3)
C = -(-8x + 8)(6x + 2) + (-8x + 8)(9x - 6)
C = (-8x + 8)(-6x - 2 + 9x - 6)
C = 8(-x + 1)(3x - 8)
D = (3x + 8)(-x + 4) + 9x^2 - 64
D = (3x + 8)(-x + 4) + (3x)^2 - 8^2
D = (3x + 8)(-x + 4) + (3x - 8)(3x + 8)
D = (3x + 8)(-x + 4 + 3x - 8)
D = (3x + 8)(2x - 4)
D = (3x + 8) * 2(x - 2)
D = 2(3x + 8)(x - 2)
E = (-7x - 9)^2 - 49
E = (-7x - 9)^2 - 7^2
E = (-7x - 9 - 7)(-7x - 9 + 7)
E = (-7x - 16)(-7x - 2)
F = (-9x + 1)^2 + (-9x + 1)(-5x + 7)
F = (-9x + 1)(-9x + 1 - 5x + 7)
F = (-9x + 1)(-14x + 8)
F = (-9x + 1) * 2(-7x + 4)
F = 2(-9x + 1)(-7x + 4)
Exercice 6 :
A = (-3x + 6)(2x - 1) + (-5x + 1)(-3x + 6)
A = (-3x + 6)(2x - 1 - 5x + 1)
A = 3(-x + 2)(-3x)
A = -9x(-x + 2)
B = (-x - 5)^2 - 25
B = (-x - 5)^2 - 5^2
B = (-x - 5 - 5)(-x - 5 + 5)
B = (-x - 10)(-x)
B = -x(-x - 10)
B = -x * (-1)(x + 10)
B = x(x + 10)
C = -(-10x + 4)(-10x - 5) + (-10x - 5)
C = -(-10x - 5)(-10x + 4 - 1)
C = -(-10x - 5)(-10x + 3)
D = 81x^2 - 36
D = (9x)^2 - 6^2
D = (9x - 6)(9x + 6)
D = 3(3x - 2) * 3(3x + 2)
D = 9(3x - 2)(3x + 2)
E = (10x + 9)(-4x - 2) + (-4x - 2)^2
E = (-4x - 2)(10x + 9 - 4x - 2)
E = -2(2x + 1)(6x + 7)
F = -(-10x - 4)(9x - 5) + 81x^2 - 25
F = -(-10x - 4)(9x - 5) + (9x)^2 - 5^2
F = (10x + 4)(9x - 5) + (9x - 5)(9x + 5)
F = (9x - 5)(10x + 4 + 9x + 5)
F = (9x - 5)(19x + 9)
