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

Question

Mathematics

Jovan Madden

9 May, 11:58

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

+5

Answers (2)

Know the Answer?

Corey Hines · Answer 1

Answer: x = 10

Step-by-step explanation:ln20+ln5=2lnx

ln (20x5) = lnx^2

ln100=1nx^2

100=x^2

square root

x=10

Julie Harvey · Answer 2

x = 10

Step-by-step explanation:

l n 20 + l n 5 = 2 l n x

ln (20*5) = ln x²

ln (100) = lnx²

100 = x²

x = + / - 10

Since logs of negative numebrs don't exist, we reject - 10