Beyond the Basics

67. $A (1, 0), B (6, 0), d (A, B) = 5$ $A (1, 0), B (6, 0), d (A, B) = 5$
69. $A (- 2, - 1), B (2, 3), d (A, B) = 4 \sqrt{2}$ $A (- 2, - 1), B (2, 3), d (A, B) = 4 \sqrt{2}$
71. $(0, - 3)$ $(0, - 3)$
73. $c = \pm \sqrt{2}$ $c = \pm \sqrt{2}$
75. $c = \pm 25$ $c = \pm 25$
77. ${(- \frac{1}{3}, - \frac{1}{8}), (\frac{1}{8}, \frac{1}{3})}$ ${(- \frac{1}{3}, - \frac{1}{8}), (\frac{1}{8}, \frac{1}{3})}$
79. ${(- 1, 1), (1, 1), (- 1, - 1), (1, - 1)}$ ${(- 1, 1), (1, 1), (- 1, - 1), (1, - 1)}$
81. $\pm (2 + 3 i)$ $\pm (2 + 3 i)$
83. $\pm (4 - 3 i)$ $\pm (4 - 3 i)$
85. $\pm (4 + \sqrt{3} i)$ $\pm (4 + \sqrt{3} i)$
87. ${(1, 7)}$ ${(1, 7)}$
89. ${(1, 5)}$ ${(1, 5)}$
91. ${(1, 0), (2, \frac{ln 2}{ln 3})}$ ${(1, 0), (2, \frac{ln 2}{ln 3})}$

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Table of Contents for Beyond the Basics