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18-11-2018
Mathematics

contestada

2^x +4^x +8^x = −14

What is x?

Respuesta :

18-11-2018

Answer: No real solution [tex]x\in\O[/tex]

Why? Because for any value of x

[tex]2^x>0\\\\4^x>0\\\\8^x>0[/tex]

Therefore

[tex]2^x+4^x+8^x > 0[/tex]

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