82. (6 + 8i) + (2 15i) – 83. (6 20i) (23 10i) – – – 84. (4 + 8i)(10 5i) – 85. Write the following quadratic function in vertex form. Then, identify the axis of symmetry. 86. = + 6x 2 y x2 –
82. (6 + 8i) + (2 – 15i) 83. (6 – 20i) – (23 – 10i) 84. (4 + 8i)(10 – 5i) 85. Write the following quadratic function in vertex form. Then, identify the axis of symmetry. 86. y = x2 + 6x – 2
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