## Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole

# Chapter 1 - Section 1.3 - Algebraic Expressions - 1.3 Exercises: 116

#### Answer

$(x^{2}+4)(x^{4}-8x^{2}+16)$

#### Work Step by Step

Use the sum of cubes to solve. (1) $x^{6}+64$ (2) $(x^{2})^{3}+4^{3}$ (3) $(x^{2}+4)((x^{2})^{2}-2(x^{2})(4)+(4)^{2})$ (4) $(x^{2}+4)(x^{4}-8x^{2}+16)$

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