Hi! How should one proceed with an equation like this.. x^(1/2) + x^(1/4) = 20 without having any calculator obv.. thanks!
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let your equation becomes factor can you take it form here?
uh.. I understood what you did. y = -5 or y = 4 ? but.. do I get the correct answer? If I insert 4 into the original equation..
Because is impossible the there is one solution.
doesnt x = 256 ? because 4^4 is 256 and sqrt of 256 is 16, so 16 plus 4 = 20
Originally Posted by Twig doesnt x = 256 ? because 4^4 is 256 and sqrt of 256 is 16, so 16 plus 4 = 20 Yes. Plato made a simple careless mistake. Be that as it may, it's a mere detail - it's the method that's important and the method is what Plato's given you.
Absolutely, the method is def. the most important. Just wanted to be sure that I got it correct. Thanks!
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