Find x if – InterviewSolution

1.

Find x if

Answer»

x=4

Step-by-step EXPLANATION:

${5}^{x} +{5}^{x + 1} = {5}^{3} \times 30 \\ {5}^{x} + {5}^{x + 1} = 125 \times 30 \\ {5}^{x} + {5}^{x+ 1} = 3750 \\ {5}^{x} + {5}^{x + 1} = {5}^{4} + {5}^{4 + 1}$

I HOPE you UNDERSTAND the answer x=4

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