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Mathematics 8 Online
OpenStudy (jojokiw3):

How do I do this exponent equation?

OpenStudy (jojokiw3):

\[2^{3x-2} = 4\]

OpenStudy (jojokiw3):

@zepdrix

zepdrix (zepdrix):

\[\Large\rm 2^{3x-2} = \color{orangered}{4}\]\[\Large\rm 2^{3x-2} = \color{orangered}{2^2}\]

zepdrix (zepdrix):

Since the bases are the same, the exponents must be equal as well.\[\Large\rm 3x-2=2\]

zepdrix (zepdrix):

Get it? :O

OpenStudy (jojokiw3):

SO simply take logbase 2 of both sides and then do the rest?

zepdrix (zepdrix):

Notice that the bases are the same, so you can simply equate the exponents. But yes, if you want to be more systematic about it, log_2 each side :)

OpenStudy (jojokiw3):

\[ \frac{ 4 }{3 }\] Woah. It's simpler than I thought. o.o I see now.

zepdrix (zepdrix):

Cool c:

OpenStudy (jojokiw3):

thanks! you're always super helpful!

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