SOLUTION: How do I solve the following problem for X? Please exact or round to hundredths. 7^2x+1=3^x+2

Algebra.Com
Question 698920: How do I solve the following problem for X? Please exact or round to hundredths.
7^2x+1=3^x+2

Answer by ankor@dixie-net.com(22740)   (Show Source): You can put this solution on YOUR website!
Assume the problem is:

using logs

The log equiv of exponents
(2x+1)log(7) = (x+2)log(3)
Find the logs of 7 and 3
.8451(2x+1) = .4771(x+2)
1.6902x + .8451 = .4771x + .9542
1.6901x - .4771x = .9542 - .8451
1.213x = .1091
x =
x ~ .09
:
:
You can check this on your calc, replace x with .09 in the 1st equation, confirm they are equal

RELATED QUESTIONS

How do I solve the following problem for X? Please exact or round to hundredths. 2... (answered by Alan3354)
How do you solve, for x, the following quadratic: five over x-1 minus 3 over 2x+7 = 2 (answered by josgarithmetic)
How do I solve for x in the following problem: 3 4/5 / x = 2... (answered by srinivas.g)
determine the zeros(if any) of (round to nearest hundredths) f(x)=-1+1/2 1n(x-7) (answered by stanbon)
How do i find the exact values of x for which 3(2x-1)^2+2(2x-1)-8=0? (answered by lwsshak3)
2/9X = 1/7 round to... (answered by checkley75)
Hello my name is Juan I'm in college, but I have a big problem I have 3 questions... (answered by Alan3354,addingup)
I have no idea how to do this. Please help. Solve the following equations for the... (answered by funmath)
IF g(x)= 2x^2-2x-4, find the following... PROBLEM: g(x-2) how do solve this i... (answered by vleith)