A very tricky algebra question from Oxford Entrance Aptitude Test

[@RealQinnMalloryu4]

(20)+2xy+(22) =44 (10^10)+2xy (11^11) (5^5^5^5]+2xy+(5^6^5^6) (1^1^1^1)+2xy(1^3^2^1^3^2)+1xy(1^1^3^2) (32) (xy ➖ 3xy+2).