Bonjour
Développer et réduire ces expressions.
A = 4(2x + 7) = 8x + 28
B = x(5 - 2x) = 5x - 2x²
C = 5x(7x + 6) = 35x² + 30x
D=-3x(8x - 4) = 24x² - 12x*
E = (2x + 3)(4x + 5)
E = 8x² + 10x + 12x + 15
E = 8x² + 22x + 15
F = (10x + 4)(7x - 2)
F = 70x² - 20x + 28x - 8
F = 70x² + 8x - 8
G = (-3x + 8)(x - 11)
G = - 3x² + 33x + 8x - 88
G = - 3x² + 41x - 88.
