I found the following question in my Math B book. It is a radical equation problem. I played with this question for 20 minutes and got nowhere. Here it is: 8x^(-3/4) = 27 Solve for x. The answer is x = 16/81. How do I get this answer?
Follow Math Help Forum on Facebook and Google+
Originally Posted by magentarita I found the following question in my Math B book. It is a radical equation problem. I played with this question for 20 minutes and got nowhere. Here it is: 8x^(-3/4) = 27 Solve for x. The answer is x = 16/81. How do I get this answer? D is just for simplicity in the last line.
Originally Posted by JeWiSh D is just for simplicity in the last line. I know about applying logs but this question is located in the radical equations chapter. How do you find x using radical equations?
Originally Posted by magentarita I found the following question in my Math B book. It is a radical equation problem. I played with this question for 20 minutes and got nowhere. Here it is: 8x^(-3/4) = 27 Solve for x. The answer is x = 16/81. How do I get this answer?
Just to elaborate, we're making use of the fact that: So for your question, mathaddict raised both sides to the power of .
View Tag Cloud