Answer:
12. 37. 13. 48 14. 75. For 15-17 just do the two angles equal to each other. for example (5x-17)=(3x-14) and find x. Same with 7 and 8
I'll show you how to do the first one.
Answer:x
3
+
2
i
,
3
−
2
i (The first one)
X=√−x−2X=−√−x−2(The second one)
Step-by-step explanation: