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(3x^2-5x+2)(9-12x+4x^2)(9-x)<0
Pierwszy nawias:
delta : 25-24=1
pierwiastek z delty : 1
Drugi nawias:
delta: 144-144=0
x=-b/2a
x=12/4=3
dla trzeciego nawiasu :
9-x=0
-x=-9
x=9