Show What You Know About i and Equations of Circles

Last updated almost 8 years ago
5 questions
5

What is (3 + 2i) (4 + 4i)

1

5i is equal to -5.

1

Write the equation of a circle with a center at (-5, 4) and a radius of 4.

1

What is the radius of a circle with a center at (4, 2) and has (2, 4) on the circle.

1

The center and the radius of :(x-5)^2 + (y+7)^2 =9 is...