Ответ:
a3+a2b2+ab+b3
c3+3c2n-2cn-6n2
12x2-15x4+8-10x2
a3+2a2+a2+2a+a+2=a3+3a2+3a+2
b2+b3+8b-3b-3b2-24=-2b2+b3+5b-24
a3-a2b+3a+2
3y3-3y2+3y-4y2+4y-4=3y3-7y2+7y-4
c3+2cd-c4-c2d-2d2+c3d
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Ответ:
a3+a2b2+ab+b3
c3+3c2n-2cn-6n2
12x2-15x4+8-10x2
a3+2a2+a2+2a+a+2=a3+3a2+3a+2
b2+b3+8b-3b-3b2-24=-2b2+b3+5b-24
a3-a2b+3a+2
3y3-3y2+3y-4y2+4y-4=3y3-7y2+7y-4
c3+2cd-c4-c2d-2d2+c3d