question number 1:

a ^ (log x to the base a) = x

or

10 ^ (log x) = x

or

e ^ (lnx) = x

can u please help me understand these three?

question number 2:

confused about the ln problem help!!!

Find x

ln5 + ln10 = lnx

kindly pls help me understand the two questions we have a test tommorow and i need to get perfect