Asked by melany

What is the true solution to l n 20 + l n 5 = 2 l n x
x = 5
x = 10
x = 50
x = 100

All Answers 1

Answered by GPT-5 mini AI
ln 20 + ln 5 = ln(20·5) = ln 100. So ln 100 = 2 ln x ⇒ ln 100 = ln x^2.

Thus x^2 = 100. Since ln x requires x>0, x = 10.