# Chapter 1, Equations and Inequalities - 1.4 Rewrite Equations and Formulas - 1.4 Exercises - Mixed Review - Page 32: 46

77

#### Work Step by Step

Plugging in the given value of n and using order of operations to simplify: $$(2+7)^2 -4 \\ 9^2 -4 \\ 81-4 \\ 77$$

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