How to say you have to investigate that problem. in Japanese
1)
さあno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verb君君(kun) (pn) you/buddy/pal/monarch/ruler/sovereign/masterは(int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sighこ(suf) doing/in such a state/doing together/contest/match/familiarizing suffixのの(no) (prt) indicates possessive/nominalizes verbs and adjectives/substitutes for "ga" in subordinate phrases/indicates a confident conclusion/ indicates emotional emphasis/indicates question問題問題(mondai) (n) problem/questionをを(wo) (prt) indicates direct object of action/indicates subject of causative expression/indicates an area traversed/indicates time over which action takes place/indicates point of departure or separation of action/indicates object of desire, like, hate,しし(shi) (num) 10^24/septillion/quadrillionらべなくてはいけませんno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verb。。(。) Japanese period "."
