Odpowiedź :
[tex]D:x^2+x-6\not=0\\D:x^2-2x+3x-6\not=0\\D:x(x-2)+3(x-2)\not=0\\D:(x+3)(x-2)\not=0\\D:x\not =-3 \wedge x\not=2\\\\(x^5-32)(x^4-81)=0\\\\x^5-32=0\\x^5=32\\x=2\\\\x^4-81=0\\x^4=81\\x=-3 \vee x=3\\\\-3\not \in D \\2\not \in D\\\\\boxed{x=3}[/tex]