Find all real numbers of eq $\displaystyle 5^x+3^x+2^x-28x+18=0$
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Graph it to find the solutions. You cannot solve for x algebraically.
Originally Posted by perash Find all real numbers of eq $\displaystyle 5^x+3^x+2^x-28x+18=0$ 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
I have one solution just by looking at the equation.
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