1) 3a−1a-1a−1a2+1a²+1a2+1 2) yy−1y-1y−1y+1y+1y+1 3) mnm−nm-nm−nm2+mn+n2m²+mn+n²m2+mn+n2 4) 2aa−ba-ba−ba2+ab+b2a²+ab+b²a2+ab+b2 5) x²y²x2−y2x²-y²x2−y2 6) 7cd+3cbcd+3cbcd+3cbcd−3cbcd-3cbcd−3cb 7) 81−9x3y21-9x³y²1−9x3y21+9x3y21+9x³y²1+9x3y2 8) 2ab16a3−116a³-116a3−1 9) 2c+dc+dc+dc2−cd+d2c²-cd+d²c2−cd+d2 10) 23x−23x-23x−29x2+6x+49x²+6x+49x2+6x+4 11) 2c²2d3−82d³-82d3−8 12) 1/8a2−a21/8a²-a²1/8a2−a21+a21+a²1+a2 13) x²7−56y37-56y³7−56y3 14) 4aba+8a4a+8a^4a+8a4
1) 3a−1a-1a−1a2+1a²+1a2+1 2) yy−1y-1y−1y+1y+1y+1 3) mnm−nm-nm−nm2+mn+n2m²+mn+n²m2+mn+n2 4) 2aa−ba-ba−ba2+ab+b2a²+ab+b²a2+ab+b2 5) x²y²x2−y2x²-y²x2−y2 6) 7cd+3cbcd+3cbcd+3cbcd−3cbcd-3cbcd−3cb 7) 81−9x3y21-9x³y²1−9x3y21+9x3y21+9x³y²1+9x3y2 8) 2ab16a3−116a³-116a3−1 9) 2c+dc+dc+dc2−cd+d2c²-cd+d²c2−cd+d2 10) 23x−23x-23x−29x2+6x+49x²+6x+49x2+6x+4 11) 2c²2d3−82d³-82d3−8 12) 1/8a2−a21/8a²-a²1/8a2−a21+a21+a²1+a2 13) x²7−56y37-56y³7−56y3 14) 4aba+8a4a+8a^4a+8a4