What is the radius (x+2)^2+(y-1)^2=9 ?

The radius (x+2)^2+(y-1)^2=9 is r=3

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

radius (x+2)^2+(y-1)^2=9

radius

(x + 2)^{2} + (y - 1)^{2} = 9

r = 3

Solution steps

(x + 2)^{2} + (y - 1)^{2} = 9

Rewrite

(x + 2)^{2} + (y - 1)^{2} = 9

in the form of the standard circle equation

(x - (- 2))^{2} + (y - 1)^{2} = 3^{2}

Therefore the circle properties are:

(a, b) = (- 2, 1), r = 3

And the radius is:

r = 3

(x + 2)^{2} + (y - 3)^{2} = 16

(x + 4)^{2} + (y - 3)^{2} = 16

x^{2} + y^{2} + 4 x + 14 y + 52 = 0

x^{2} + y^{2} - 14 x + 8 y - 16 = 0

(x - 3)^{2} + (y + 3)^{2} = 36