Подобные ! 1) 2cd^2-2bc^2+3cd^2+1,1b^2c^2+2bc^2 2) 3,7a^2b-3ab+2ab^2-1,2a^2b-2ab^2 3) x^3y^2-2xy^2+3x^2y-2x^3y^2-3x^2y-xy^2 4) 4mn^3-5mn+2m^2n^3+mn^3-mn-2m^2n^3 5) ab+ab^2+a^2b-2ab-ab^2-2a^2b 6) c^3d+cd+cd^3-3c^3d-cd-3cd^3