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-(-1)*-9(-1)+1=-1+9+1=11
3x²-6x+3+12x²+28x²-8x-35+8=
3x²+12x²+28x²-14x-32+8=
43x²-14x-24=
43*(-1)²-14*(-1)-24=
43+14-24=57-24=33
*-mnożenie