Bonjour
Développer, réduire et ordonner les expressions algébriques suivantes :
A = (x + 4)(3x + 7)
A = 3x^2 + 7x + 12x + 28
A = 3x^2 + 19x + 28
B = (5 + 3x) - (2x + 4)
B = 5 + 3x - 2x - 4
B = x + 1
C = (x – 6)(2x – 4)
C = 2x^2 - 4x - 12x + 24
C = 2x^2 - 16x + 24
D = (2x – 9)(2x + 9)
D = (2x)^2 - 9^2
D = 4x^2 - 81
E = (2x + 4)2 – (x - 1)
E = 4x^2 + 16x + 16 - x + 1
E = 4x^2 + 15x + 17
F = 81x2 – (8x + 4)(8x — 4)
F = 81x^2 - [(8x)^2 - 4^2]
f = 81x^2 - 64x^2 + 16
F = 17x^2 + 16