Answer:
complex sentence
Step-by-step explanation:
Independent clause: "I’ll take over from here"
Dependent: "You tell him and" and "try to undo the damage"
Let remember that an independent clause is a sentence that can stand on his own, does not need a complement to have a complete meaning, on the other hand, the dependent clause needs an independent one to have full meaning otherwise would be an incomplete sentence. Due to we have here two independent clauses and one dependent clause, per definition, this is a complex sentence.