$\LARGE 6x^3-7x^2+7x+6=0$ Gruppiere 2 zu 2! | $S =\{-1;\frac{2}{3};3\} $ |
$\LARGE 2x^3+7x^2+7x+2 = 0$ Gruppiere 2 zu 2! | $\LARGE S =\{-1;-\frac{1}{2};-2\} $ |
$\LARGE x^4-x^3-x+1= 0$ | $\LARGE (x-1)(x^3-1)=0 \;\; ; \;\; (x-1)^2(x^2+x+1) =0 \;\; ; \;\; S =\{ 1 \}$ |
$\LARGE x^4-5x^3+5x-1= 0$ | $\LARGE (x^2-1)(x^2+1)-5x(x^2-1)=0 \;\; ; \;\; S =\{1;-1;\frac{5+ \sqrt{21}}{2};\frac{5- \sqrt{21}}{2}\} $ |
$\LARGE x^3-31x^2+31x-5= 0$ | $\LARGE S =\{1;\frac{1}{5};5\} $ |