# Thread: Find all real numbers of

1. ## Find all real numbers of

Find all real numbers of eq

$5^x+3^x+2^x-28x+18=0$

2. Graph it to find the solutions. You cannot solve for x algebraically.

3. Originally Posted by perash
Find all real numbers of eq

$5^x+3^x+2^x-28x+18=0$
I get two surprisingly simple solutions (though it took my calculator several minutes to find them). I won't give them to you, but I will mention that they are integers.

-Dan

4. I have one solution just by looking at the equation.