Ireally need with this since i have a math test tomorrow, i'd really appreciate it if someone could . how do i solve by finding a common base; (3/8)^2x=64/121 i don't know how to find common bases of certain exponential equations that have fractions in them.

Ok first of all, I EXTREMELY appreciate your use of parenthesis. Ok so first just raise both sides to the power of 1/2.



You'll see why I didn't include a negative. Then apply the log base 3/8 and you get


Then you split the log up and you get

You couldn't put a negative value for a log. That is why I excluded the negative part of the sqrt.