Complex sentences use subordinators like 'while and whereas'. | Impersonal and formal tone means using more academic words like 'problematic'.
To write a more formal essay, instead of conjunctions (and, but, so, ...), subordinators (because, whilst, whereas,...) should be used. Rather
than emotive words (bad, wrong, love, ...), words expressing value judgement (problematic, questionable, value, ...) should be put to use.
As an alternative for personal pronouns (I, you, we, ...) or phrasal verbs ( take up, take care of, ...), passive structure (if ... considered) or academic word choices
(assume, conduct, ...) should be employed.