Zad 8(bez postawiania wartości) Zad 11 i 12 PILNE

a)  4a^2-4ab+b^2-1/4a^2-4a^2-b^2   b)  3(1-3x+9x^2)-9x^2+25-2(9x^2+12x+4)=3-6x+18x^2-9x^2+25-18x^2-24x-8=20-30x-9x^2   11. a)x^3-3x^2+3x-1+8-12x+6x^2-x^3=3x^2-9x+7 b) 8-12x+6x^2+x^3+2x^3-6x^2+6x-1=7-6x+3x^3 c)x^3+1+1-3x+3x^2-x^3=2-3x+3x^2 d)3x^3-24-x^3-9x^2-27x-27=-52+2x^2-9x^2-27x e)x^3+12x^2+48x+64-64+x^3=2x^3+12x^2+48x f)5+3[latex]sqrt[3]{5^2}[/latex]x+3[latex]sqrt[3]{5}[/latex]x^2+x^3-5+3[latex]sqrt[3]{5^2}[/latex]x-3[latex]sqrt[3]{5}[/latex]x^2+x^3-6[latex]sqrt[3]{25}[/latex]=2x^3

11. a)x^3-3x^2+3x-1+8-12x+6x^2-x^3=3x^2-9x+7 b) 8-12x+6x^2+x^3+2x^3-6x^2+6x-1=7-6x+3x^3 c)x^3+1+1-3x+3x^2-x^3=2-3x+3x^2 d)3x^3-24-x^3-9x^2-27x-27=-52+2x^2-9x^2-27x e)x^3+12x^2+48x+64-64+x^3=2x^3+12x^2+48x f)5+3x+3x^2+x^3-5+3x-3x^2+x^3-6       b)  3(1-3x+9x^2)-9x^2+25-2(9x^2+12x+4)=3-6x+18x^2-9x^2+25-18x^2-24x-8=20-30x-9x^2 a)  4a^2-4ab+b^2-1/4a^2-4a^2-b^2