А) 4а^2-b^2-2a+b-3
Б) b^3-6b^2+12b-8-(b^3-27)=b^3-6b2+12b-8-b^3+27=-6b^2+12b+19
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А) 4а^2-b^2-2a+b-3
Б) b^3-6b^2+12b-8-(b^3-27)=b^3-6b2+12b-8-b^3+27=-6b^2+12b+19