# Chapter 4 - Polynomials - Review Exercises: Chapter 4 - Page 298: 13

$1$

#### Work Step by Step

Using the laws of exponents, the given expression, $\dfrac{(a+b)^4}{(a+b)^4} ,$ simplifies to \begin{array}{l}\require{cancel} (a+b)^{4-4} \\\\= (a+b)^{0} \\\\= 1 .\end{array}

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