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x-2-2-x-1-x-




Question Number 185294 by SEKRET last updated on 19/Jan/23
   x^2  −2^x  = 1       x= ?
$$\:\:\:\boldsymbol{\mathrm{x}}^{\mathrm{2}} \:−\mathrm{2}^{\boldsymbol{\mathrm{x}}} \:=\:\mathrm{1} \\ $$$$\:\:\:\:\:\boldsymbol{\mathrm{x}}=\:? \\ $$
Commented by Frix last updated on 19/Jan/23
I don′t think we can find the exact solutions  x_1 ≈−1.19825020  x_2 =3  x_3 ≈3.40745052
$$\mathrm{I}\:\mathrm{don}'\mathrm{t}\:\mathrm{think}\:\mathrm{we}\:\mathrm{can}\:\mathrm{find}\:\mathrm{the}\:\mathrm{exact}\:\mathrm{solutions} \\ $$$${x}_{\mathrm{1}} \approx−\mathrm{1}.\mathrm{19825020} \\ $$$${x}_{\mathrm{2}} =\mathrm{3} \\ $$$${x}_{\mathrm{3}} \approx\mathrm{3}.\mathrm{40745052} \\ $$
Commented by Frix last updated on 19/Jan/23
Obviously x=3 is one of the solutions.
$$\mathrm{Obviously}\:{x}=\mathrm{3}\:\mathrm{is}\:\mathrm{one}\:\mathrm{of}\:\mathrm{the}\:\mathrm{solutions}. \\ $$
Commented by SEKRET last updated on 20/Jan/23
  thanks sir  Frix
$$\:\:\boldsymbol{\mathrm{thanks}}\:\boldsymbol{\mathrm{sir}}\:\:\boldsymbol{\mathrm{Frix}} \\ $$

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