Solve. $$ x^{4}-36 x^{2}=-35 $$ If there is more than one solution, separate them with commas. $$ x=\square \square $$

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Solve the equation $$ x^{4}-36x^{2}=-35 $$.
Solve the equation by following steps:
- step0: Solve for $$x$$:
  $$x^{4}-36x^{2}=-35$$
- step1: Move the expression to the left side:
  $$x^{4}-36x^{2}-\left(-35ight)=0$$
- step2: Remove the parentheses:
  $$x^{4}-36x^{2}+35=0$$
- step3: Factor the expression:
  $$\left(x-1ight)\left(x+1ight)\left(x^{2}-35ight)=0$$
- step4: Separate into possible cases:
  $$\begin{align}&x-1=0\&x+1=0\&x^{2}-35=0\end{align}$$
- step5: Solve the equation:
  $$\begin{align}&x=1\&x=-1\&x=\sqrt{35}\&x=-\sqrt{35}\end{align}$$
- step6: Rewrite:
  $$x_{1}=-\sqrt{35},x_{2}=-1,x_{3}=1,x_{4}=\sqrt{35}$$
The solutions to the equation $$x^{4}-36x^{2}=-35$$ are $$x=-\sqrt{35}, -1, 1, \sqrt{35}$$.
$$ x = -\sqrt{35}, -1, 1, \sqrt{35} $$

Solve.

If there is more than one solution, separate them with commas.

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Solve. If there is more than one solution, separate them with commas.