Which equation is an equation of a circle with a radius of 10cm and center at (-3,6)
(x-3)^2+(y+6)^2=100
(x-3)^2+(y+6)^2=20
(x+3)^2+(y-6)^2=20
(x+3)^2+(y-6)^2=100

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i