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Solve-for-x-1-x-x-1-2-x-x-2-x-1-




Question Number 54582 by Tawa1 last updated on 07/Feb/19
Solve for x:     (1/( (√(x + (√x) + 1)))) + (2/( (√(x + (√x) − 2))))  = (√(x + 1))
$$\mathrm{Solve}\:\mathrm{for}\:\mathrm{x}:\:\:\:\:\:\frac{\mathrm{1}}{\:\sqrt{\mathrm{x}\:+\:\sqrt{\mathrm{x}}\:+\:\mathrm{1}}}\:+\:\frac{\mathrm{2}}{\:\sqrt{\mathrm{x}\:+\:\sqrt{\mathrm{x}}\:−\:\mathrm{2}}}\:\:=\:\sqrt{\mathrm{x}\:+\:\mathrm{1}} \\ $$
Commented by MJS last updated on 07/Feb/19
with t=(√x) and squaring etc. this leads to a  polynome of degree 12  we can only approximate.  ⇒ x≈2.4474286375747
$$\mathrm{with}\:{t}=\sqrt{{x}}\:\mathrm{and}\:\mathrm{squaring}\:\mathrm{etc}.\:\mathrm{this}\:\mathrm{leads}\:\mathrm{to}\:\mathrm{a} \\ $$$$\mathrm{polynome}\:\mathrm{of}\:\mathrm{degree}\:\mathrm{12} \\ $$$$\mathrm{we}\:\mathrm{can}\:\mathrm{only}\:\mathrm{approximate}. \\ $$$$\Rightarrow\:{x}\approx\mathrm{2}.\mathrm{4474286375747} \\ $$

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