1. Wykonaj działania: a. 2(x4-2x3-1)+4(3x3-4x2)= b. (x3-2x2+3x5-4)-(3x2-2x4+4-x3)= c. (x2-3)(2x4-x)= 2. Rozwiąż równania: a. 27x^3+9=8 b. 9x3-6x2+x=0

[latex]large1 a. )\\2(x^4-2x^3-1)+4(3x^3-4x^2)=2 x^4-4x^3-2+12x^3-16x^2 =\\=2 x^4+8x^3 -16x^2-2[/latex] [latex]large b.)\\ (x^3-2x^2+3x^5-4)-(3x^2-2x^4+4-x^3)=\\= x^3-2x^2+3x^5-4 - 3x^2+2x^4-4+x^3 = 3x^5+2x^4+2x^3-5x^2-8[/latex] [latex]large c.)\ (x^2-3)(2x^4-x)=2x^6-x^3 -6x^4+3x=2x^6-6x^4-x^3 +3x[/latex] [latex]2a)\\27x^3+9=8\\ 27x^3=8-9\\27x^3=-1 /:27\\x^3=-frac{1}{27}\\x=sqrt[3]{-frac{1}{27}}\\x=-frac{1}{3}[/latex]