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C = (4x + 5)(2x - 3) - (4x + 5)(5x + 2)
D = (3x + 2)(6x + 4)+(3x + 2)²
E = -3(5x-4)² – (5x − 4)(3x + 7)
F = (x + 1)(x + 2) + 5(x + 2)
G = (2x + 1)² - 3(2x + 1)(x+3)
H = (x + 1)² + x + 1
I = (3 − x)(x + 1) + 4x(3 − x)

AIDEZ MOI VUTE SVP CEST POUR DEMAIN!!!