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crimeas [40]
2 years ago
15

Pleaseeeehow can I do it??

Mathematics
1 answer:
Otrada [13]2 years ago
3 0
7^x+49^{ \frac{x}{2} }=2\cdot  \sqrt[5]{343} \\  \\  7^x+(7^2)^{ \frac{x}{2} }=2\cdot  \sqrt[5]{7^3} \\  \\7^x+ 7^x=2\cdot 7^{ \frac{3}{5} }  \\\\ 2 \cdot 7^x=2\cdot 7^{ \frac{3}{5} } \ \ \ | \div2 \\  \\ 7^x=7^{ \frac{3}{5} }  \\  \\ x= \frac{3}{5}
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