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mathtard
Group Title
Find the following assuming that a can represent any real number
\[\sqrt[4]{(5a)}^{4}\]
 3 years ago
 3 years ago
mathtard Group Title
Find the following assuming that a can represent any real number \[\sqrt[4]{(5a)}^{4}\]
 3 years ago
 3 years ago

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gandalfwiz Group TitleBest ResponseYou've already chosen the best response.0
5a, because ur taking the 4 root of something to the fourth power
 3 years ago

mathtard Group TitleBest ResponseYou've already chosen the best response.0
so why would it be 5a?
 3 years ago

polpak Group TitleBest ResponseYou've already chosen the best response.1
it's actually 5a
 3 years ago

gandalfwiz Group TitleBest ResponseYou've already chosen the best response.0
<rolls eyes>
 3 years ago

polpak Group TitleBest ResponseYou've already chosen the best response.1
radicals are to exponents as division is to multiplication.
 3 years ago

polpak Group TitleBest ResponseYou've already chosen the best response.1
So if you take the 4th root of something to the 4th power you will get what you started with (except with even roots you have to slap an absolute value on it)
 3 years ago

polpak Group TitleBest ResponseYou've already chosen the best response.1
Or even powers that is
 3 years ago

mathtard Group TitleBest ResponseYou've already chosen the best response.0
so I don't understand what the lines represent on the sides of the answer?
 3 years ago

polpak Group TitleBest ResponseYou've already chosen the best response.1
Absolute value sign.
 3 years ago

mathtard Group TitleBest ResponseYou've already chosen the best response.0
so the 4's basically cancel eachother out?
 3 years ago

polpak Group TitleBest ResponseYou've already chosen the best response.1
If you have the same power as you have index on your radical it cancels out the exponent.
 3 years ago

mathtard Group TitleBest ResponseYou've already chosen the best response.0
ok I think I understand. at least better. But what are the lines on each side for?
 3 years ago

polpak Group TitleBest ResponseYou've already chosen the best response.1
It's a nit picky detail.
 3 years ago

polpak Group TitleBest ResponseYou've already chosen the best response.1
  is the absolute value operator.
 3 years ago
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