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Sagot :

16x²-24x+9=0
(4x-3)²=0
x=3/4

12x²+9x=0
x(12x+9)=0
x=0 ou x=-3/4

(5x+2)²-(3x+4)²=0

(2x-2)(8x+6)=0
x=-1 ou x=-3/4

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