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5 votes

√(x) -3\sqrt[4]{x} -4=0\\

asked
User Mikal
by
8.0k points

1 Answer

3 votes

Answer:

Step-by-step explanation:
(\sqrt[4]{x})^(2) - 3\sqrt[4]{x} -4=0


\sqrt[4]{x} = uu² - 3u -4 =0 ⇒
\left \{ {{u=4} \atop {u=-1}} \right. choose u=4 (
√(x) > 0 )

⇒ x=256

answered
User Mrbm
by
8.0k points

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