6. If z = x + iy = (x, y), then the equation z²+z+ 1 = 0 is written as (x,y)(x, y) + (x, y) + (1,0) = (0,0) Which of the following is correct? A. (x² - y² + x + 1, 2xy + y) = (0,0) B. (x² - y² + 2x + 1, 2xy + y) = (0,0) C. (x² + y² + x + 1, 2xy + y) = (0,0) D. (x² - y² + x + 1,4xy + y) = (0,0) E. None of the above

6. If z = x + iy = (x, y), then the equation z²+z+ 1 = 0 is written as (x,y)(x, y) + (x, y) + (1,0) = (0,0) Which of the following is correct? A. (x² - y² + x + 1, 2xy + y) = (0,0) B. (x² - y² + 2x + 1, 2xy + y) = (0,0) C. (x² + y² + x + 1, 2xy + y) = (0,0) D. (x² - y² + x + 1,4xy + y) = (0,0) E. None of the above

Algebra for College Students

10th Edition

ISBN:9781285195780

Author:Jerome E. Kaufmann, Karen L. Schwitters

Publisher:Jerome E. Kaufmann, Karen L. Schwitters

Chapter13: Conic Sections

Section13.1: Circles

Problem 48PS

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