Use a geometric representation to determine the difference of the complex numbers. z1 = - 2 - 6i

z = 7 - 15 i
z = -7 - 15 i
z = 7 + 15 i

52 cm radius = diameter = area = circumference = circumfer

Answer each of the questions for the following diagram: 1. what type of angles are these? 2. solve for x. what does x equal? 3. what is the measure of the angles?

Write the equation in general quadratic form: plz !