Question

115 學測生

想請問這兩題🙏

IXX<!
14.不等式 log(x-3)<1-log3 (x-5)之解為
(x-3)-5
x²-8x+1523
15.設A,B均為三位正整數,且B>100,若logB之尾數為 log4 之尾數之3倍,則A+B之值= 1000
16.試求720+524為幾位數?
2119
1095
54 18
2
109 45
loy A = ni+ ?
1bq B = n₂+ 3x
1+x