Problem

$\begin{array}{l} 5^{x} + 5^{x} + 5^{x} + 5^{x} + 5^{x} = 1 \\ x = ? \end{array}$

Answer

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Hide Steps

Answer

$x = - 1$

Steps

Step 1 ： $5^{x} + 5^{x} + 5^{x} + 5^{x} + 5^{x} = 5^{x + 1}$

Step 2 ： $5^{x + 1} = 1$

Step 3 ： $x + 1 = 0$

Step 4 ： $x = - 1$

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