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## Main Question or Discussion Point

I want to show this taylor expansion:

[tex]\frac{1}{\sqrt{1+{x}^{2}}} \rightarrow x^2[/tex]

what I keep getting is something to the x^3 could some one please help me with this simple expansion?

[tex]\frac{1}{\sqrt{1+{x}^{2}}} \rightarrow x^2[/tex]

what I keep getting is something to the x^3 could some one please help me with this simple expansion?