3*3-5x*5-(3x-2)*5x*5+1*1
(3-5x)² -(3x-2)*(5x+1)²=9-30x+25x²-(3x-2)(25x²+10x+1)=9-30x+25x²-75x³-30x²-3x+50x²+20x+2=
=-75x³+45x²-13x+11
3*3-5x*5-(3x-2)*5x*5+1*1
(3-5x)² -(3x-2)*(5x+1)²=9-30x+25x²-(3x-2)(25x²+10x+1)=9-30x+25x²-75x³-30x²-3x+50x²+20x+2=
=-75x³+45x²-13x+11