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

asked Oct 25, 2015 3.5k views

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by Mnk

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

Ataboy Josef answered Nov 1, 2015

8.2k points