RissaVC RissaVC

29-04-2014
Mathematics

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Can someone please help me able this: log4x^5=20

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Аноним Аноним

29-04-2014

[tex]log_4x^5=20\\\\log_4x^5=log_44^{20}\iff x^5=4^{20}\\\\x^5=4^{4\cdot5}\\\\x^5=(4^4)^5\iff x=4^4\Rightarrow x=256\\\\\\D:x\in\mathbb{R^+}[/tex]

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