Exercice 1 Développer chacune des expressions littérales suivantes :
A = (2x+ 10)^2
D = (2x+6) (2x -6)
B = (x -5)^2
E = -(9x +8) (9x -8)
C = (7x -2) (2x + 7)
F=(10/7x - 8/9)
A = (2x+ 10)^2
D = (2x+6) (2x -6)
B = (x -5)^2
E = -(9x +8) (9x -8)
C = (7x -2) (2x + 7)
F=(10/7x - 8/9)
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