Exercice 3. Développer et factoriser 1. Soit A = (4x - 5)²-(4x - 5)(2x + 3)
a) Développer et réduire A.
b) Factoriser et simplifier A.
2. Factoriser les expressions suivantes :
B = 49-4x²
D = 6x +3
F=x-5x²
C = 36x² - (5x - 3)²
E = (8 - x)²-(2x-7)²
Merci beaucoup
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