Question Number 61320 by behi83417@gmail.com last updated on 31/May/19
$$\boldsymbol{\mathrm{solve}}\:\boldsymbol{\mathrm{for}}\:\boldsymbol{\mathrm{x}}: \\ $$$$\:\:\:\:\:\:\:\:\:\boldsymbol{\mathrm{x}}^{\mathrm{4}} −\boldsymbol{\mathrm{x}}=\mathrm{12} \\ $$
Answered by MJS last updated on 31/May/19
$$\mathrm{no}\:``\mathrm{beautiful}''\:\mathrm{solution} \\ $$$${x}_{\mathrm{1}} \approx−\mathrm{1}.\mathrm{787646} \\ $$$${x}_{\mathrm{2}} \approx\mathrm{1}.\mathrm{931983} \\ $$$${x}_{\mathrm{3},\:\mathrm{4}} \approx−.\mathrm{07216857}\pm\mathrm{1}.\mathrm{862613} \\ $$