Finding the Inverse of a 5th order Function

Question

I need to get the inverse of that function. Can I get some help please? Thanks!

$$ f(x) = -x^5-2x+2 $$

Answer 1

Hint : $f^{-1}(4)=-$0.81747101900096663171875403718014803062393890731658574158584124817593022421784472707737900090539978006430155207367922222188742819732555540345960429125640051835653129488424662383631508425805621121882571...