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Sagot :

A. 5x^2 + 11x - 7
B. -5x + 6
C. 20x^2
D. -6x^2
E. 10x^2 + 15x + 12x + 18
= 10x^2 + 27x + 18
F. 6x^2 - 2x - 9x + 3
= 6x^2 - 11x +3
2. E=(5x+6)(2x+3)
= 10x^2+15x+12x+18
= 10x^2+27x+18

F=(2x-3)(3x-1)
= 6x^2-2x-9x+3
= 6x^2-11x+3

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