[tex]a)\\\\w(x)=x^2+5x-3\\\\\text{dla x=-3}\\w(-3)=(-3)^2+5*(-3)-3=9-15-3=-9\\\\\text{dla }x=\frac15\\w(\frac15)=(\frac15)^2+5*\frac15-3=\frac1{25}+1-3=\frac1{25}-2=-1\frac{24}{25}=-1.96[/tex]
[tex]b)\\\\w(x)=x^4+2x^3-x^2-6x+1\\\\\text{dla }x=\sqrt3\\\\w(\sqrt3)=(\sqrt3)^4+2*(\sqrt3)^3-(\sqrt3)^2-6\sqrt3+1\\w(\sqrt3)=9+6\sqrt3-3-6\sqrt3+1\\w(\sqrt3)=7[/tex]
