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Previous Chapter

Building Skills

Getting Ready for the Next Section

Beyond the Basics

79. $- \frac{8064 \sqrt{x}}{x^{8}}$ $- \frac{8064 \sqrt{x}}{x^{8}}$
81. $924 \frac{x^{12}}{y^{18}}$ $924 \frac{x^{12}}{y^{18}}$
87. 16
89. $x^{5}$ $x^{5}$
91. $k = \pm 2$ $k = \pm 2$

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