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4x^7*(\frac{1}{2}x)^3=4x^7*(\frac{x}{2})^3=4x^7*\frac{x^3}{8}=\frac{x^{7+3}}{2}=\frac{x^{10}}{2} 3) (-3x^3 + 2x^5) (x^5 - 1 + 5x^3)=3x^8+3x^3-15x^6+2x^{10}-2x^5+10x^8=
2x^{10}+7x^8-15x^6-2x^5+3x^3
zad.1 \frac{5x^2-(3x)^2}{2}=\frac{5x^2-9x^2}{2}=\frac{-4x^2}{2}=-2x^2 zad 2. 4x^7*(\frac{1}{2}x)^3=4x^7*\frac{1}{8}x^3=0,5x^{10}
zad. 3
(-3x^3+2x^5)(x^5-1+5x^3)=-3x^8+3x^3-15x^6+2x^{10}-2x^5+10x^8=7x^8+3x^3-15x^6+2x^{10}-2x^5