Tuesday

September 23, 2014

September 23, 2014

Posted by **pedro** on Tuesday, July 10, 2012 at 11:45am.

- algebra -
**Steve**, Tuesday, July 10, 2012 at 1:09pm4x^2+16y^2+64x+64y+256=0

4x^2+64x+256 + 16y^2+64y+64 = -256

4(x+8)^2 + 16(y+2)^2 = -256 + 256 + 64

(x+8)^2 + 4(y+2)^2 = 16

(x+8)^2/16 + (y+2)^2/4 = 1

h=-8 k=-2

a=4 b=2 c=√12

center: (-8,-2)

vertices: (-12,-2) (-4,-2)

foci: (-8-√12,-2) (-8+√12,-2)

**Answer this Question**

**Related Questions**

Math - 9x^2+16y^2-18x+64y-71=0 find the coordinates of the center, the foci, and...

algebra 2 - Graph the equation. Identify the vertices, co-vertices, and foci of ...

Pre-calculus - For the ellipse with equation 5x^2+64y^2+30x+128y-211=0, find the...

Precalc - Find the center and vertices of the ellipse. 4x^2 + 16y^2 - 64x - 32y...

math - Find the vertices, foci, and eccentricity of the ellipse. 64x^2 + 81y^2...

Algebra 2 - Choose the equation that best represents an ellipse for the given ...

algebra - Choose the equation that best represents an ellipse for the given foci...

Math - Find the center, vertices, foci, and eccentricity of the ellipse. 9x^2 + ...

AlgebraII - Choose the equation that best represents an ellipse for the given ...

algebra - An ellipse has foci (0,+-3) and vertices (0,+-4). What is the ...