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Question Number 65198 by kaivan.ahmadi last updated on 26/Jul/19

let a∈R^+  , and x>0  x^4 +(1−2a)x^2 −2ax+1=0  find x

$${let}\:{a}\in\mathbb{R}^{+} \:,\:{and}\:{x}>\mathrm{0} \\ $$ $${x}^{\mathrm{4}} +\left(\mathrm{1}−\mathrm{2}{a}\right){x}^{\mathrm{2}} −\mathrm{2}{ax}+\mathrm{1}=\mathrm{0} \\ $$ $${find}\:{x} \\ $$

Commented byMJS last updated on 26/Jul/19

no general solution but Ferrari′s formula  which is super complicated

$$\mathrm{no}\:\mathrm{general}\:\mathrm{solution}\:\mathrm{but}\:\mathrm{Ferrari}'\mathrm{s}\:\mathrm{formula} \\ $$ $$\mathrm{which}\:\mathrm{is}\:\mathrm{super}\:\mathrm{complicated} \\ $$

Commented bykaivan.ahmadi last updated on 27/Jul/19

hi sir this equatio has two answers.  i want answers to solve a question.

$${hi}\:{sir}\:{this}\:{equatio}\:{has}\:{two}\:{answers}. \\ $$ $${i}\:{want}\:{answers}\:{to}\:{solve}\:{a}\:{question}. \\ $$

Commented byMJS last updated on 31/Jul/19

so how you solve this?  I found a way to approximately solve it.

$$\mathrm{so}\:\mathrm{how}\:\mathrm{you}\:\mathrm{solve}\:\mathrm{this}? \\ $$ $$\mathrm{I}\:\mathrm{found}\:\mathrm{a}\:\mathrm{way}\:\mathrm{to}\:\mathrm{approximately}\:\mathrm{solve}\:\mathrm{it}. \\ $$

Commented bykaivan.ahmadi last updated on 04/Aug/19

i dont know sir

$${i}\:{dont}\:{know}\:{sir} \\ $$

Commented byMJS last updated on 04/Aug/19

look at question 65569

$$\mathrm{look}\:\mathrm{at}\:\mathrm{question}\:\mathrm{65569} \\ $$

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