# Chapter 1 - Precalculus Review - 1.3 The Basic Classes of Functions - Exercises - Page 22: 7

{u: u$\ne$±2}

#### Work Step by Step

The domain of G is the set of numbers u such that the polynomial in the denominator is not equal to 0. $u^{2}-4=0$ when u=±2. Therefore, The domain of G(u): {u: u$\ne$±2}

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