Sagot :
Bonjour
Développer et réduire les expressions suivantes.
A = 6(x + 3) + (2x - 3)(3x - 5)
A = 6x + 18 + 6x² - 10x - 9x + 15
A = 6x² + 6x - 10x - 9x + 18 + 15
A = 6x² - 13x + 33
B = (8 - 3x)(4x + 1) - x(x + 2)
B = 32x + 8 - 12x² - 3x - x² - 2x
B = - 12x² - x² + 32x - 2x - 3x + 8
B = - 13x² + 27x + 8
C = (2x + 1) - (x - 1)(-3x + 8)
C = 2x + 1 - (- 3x² + 8x + 3x - 8)
C = 2x + 1 + 3x² - 8x - 3x + 8
C = 3x² + 2x - 8x - 3x + 1 + 8
C = 3x² - 9x + 9
D = 2x(4 - 7x) + (7x + 5)(2x - 6)
D = 8x - 14x² + 14x² - 42x + 10x - 30
D = - 14x² + 14x² + 8x + 10x - 42x - 30
D = - 24x - 30
E = (3x + 2)(x - 5) - (x - 5)
E = 3x² - 15x + 2x - 10 - x + 5
E = 3x² + 2x - 15x - x - 10 + 5
E = 3x² - 14x - 5
F= 3(7x² + 2x - 8) - (4x + 1)(5 - 9x)
F = 21x² + 6x - 24 - (20x - 36x² + 5 - 9x)
F = 21x² + 6x - 24 - 20x + 36x² - 5 + 9x
F = 21x² + 36x² + 6x + 9x - 20x - 24 - 5
F = 57x² - 5x - 29.