# Do I Need to Rationalise?

Calculus Level 4

$\large \lim_{n\to\infty} \frac{\sqrt[]{n^3 -2n^2 +1}+ \sqrt[3]{n^4 +1}}{\sqrt[4]{n^6+6n^5+2} - \sqrt[5]{n^7+3n^3+1}}$

Find the value of the limit above.

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