Question

х^4+ 11х^3-х^2=0
^-степень.

Answer 1

$x^{4}+11 x^{3} - x^{2} =0$
$x^{2} ( x^{2}+11x-1)=0$

$x^{2} =0 \ x=0$

или

$x^{2}+11x-1=0$
$D=121-4*(-1)=125$
$x = frac{-11б5 sqrt{5} }{2}$