Problem 4

 

Solve the equation for x:  .

 

[Problem submitted by Steve Lee, LACC Professor of Mathematics.]

 

 

Solution for Problem 4:

 

 

 

--9+9=0-9=0

 

=0= 1, 3, or -3.

 

*= 1 the base 2- 1=1.1

 

*= -3 makes the base 2- 1<0.

 

-3

 

3 is the only solution.