# algebra 2

posted by .

Which is the standard form of a circle with equation x^2 + 4x + y^2 - 6y = 3?

A. (x+2)^2+(y+9)^2=16

B. (x-2)^2+(y-9)^2=3

C. (x+2)^2+(y-3)^=16

D. (x+2)^2+(y-3)^2=3

• algebra 2 -

Nope. Forgot to add the constants to both sides of the equation.

x^2 + 4x + y^2 - 6y = 3
(x^2+4x+4) + (y^2-3y+9) = 3+4+9
(x+2)^2 + (y-3)^2 = 16
(C)

## Similar Questions

1. ### Math

The standard form of a circle is Ax^2+Cy^2+Dx+Ey+F=0. Write the equation for the circle: Center (1,2), point on the circle (-2,-1). Okay, I've always put circles in the form (x-h)^2+(y-k)^2=0. I got this: r^2=(x-1)^2+(y-2)^2 then I …
2. ### Algebra 2

write the standard form of the equation of the circle withthe given radius (8,0) and whose center is the origin
3. ### Calculus

Complete the square to write the equation x^2 + y^2 - 6x - 2y + 4 = 0 in standard form. Use the standard form of the equation to identify the center and the radius of the circle.
4. ### college algebra

write the equation of the circle in standard form find the center radius, intercept and graph circle x^2 +y^2+8x+2y+8=0
5. ### college algebra

Write the equation of the circle in standard form. Find the center, radius and intercepts. x^2 + y^2 + 4x + 2y - 20 = 0
6. ### college algebra--need help please!!

write the standard form of the equation and the general form of the equation of the circle with radius r and center (h,k) r=10; (h,k)=(8,-6)
7. ### College Algebra

Write the equation of the circle in standard form. Find the center, radius, intercepts and graph the circle. x^2+y^2+14x+18y=-81
8. ### College Algebra

Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^2+16x-18y+145=25
9. ### Algerbra

Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x2+y2+16x−18y+145=25 Standard form (x-h)^2 +(y-k)^2 k
10. ### Algebra

2. Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x2+y2+8x+2y+8=0

More Similar Questions