Write the standard equation for the circle whose center is at ​(6​,2​) and whose radius is 2.

.

Step-by-step explanation:

In general, let denote the center of a given circle. Let denote the radius of that circle. The standard equation for that circle would be:

.

The circle in this question is centered at .  

The radius of this circle is . Therefore, .

Hence, the standard equation for this circle would be:

.

answer: b.

step-by-step explanation:

it is b. cause the equations are put in the right category

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.