# algebra

posted by .

x^2 +4x +9y^2 -36y +4=0

• algebra -

This is the equation of an ellipse.
I assume you want it in standard form
complete the square

x^2 + 4x + 4 + 9(y^2 - 4y + 4) = -4 + 4 + 36
(x+2)^2 + 9(y-2)^2 = 36
divide both sides by 36

(x+2)^2 /36 + (y-2)^2 /4 = 1

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### algebra

84y^3 ______ 36y^4 Reduce?? See my comment to your first post.
2. ### Algebra

Would this be correct? Factpr completley: y^3-12y^2+36y y(y^2-12y+36) y(y-6)^2
3. ### ALGEBRA

1, Factor each expression x^2 - 10x - 24 A. (x + 4)(x - 6) B. (x + 6)(x - 4) C. (x + 2)(x - 12) D. (x + 12)(x - 2) 2, x^2 - 36 = 0 A. (1 + square root of 3, 1 - square root of 3) B. (-6,6) C. No solution D. None of these 3, Factor …
4. ### Algebra 2

Factor completely: (0.36y^2-0.0001)
5. ### algebra

Factor the expression 25x^2-60xy+36y^2 into a product of binomials.
6. ### drwls:precalc

4x^2-9y^2-40x+36y+100=0 I still end up with the wrong answer. I end up with 4(x-5)^2/-120 - 9(y+2)^2=-120 9 can't go into -120 My procedure: (4x^2-40x)-(9y^2+36y)=-100 4(x^2-10x +4)-9(y^2 +4 +4)=-100+ 4(4)-9(4) 4(x-5)^2-9(y+2)^2=-120 …
7. ### intermediate algebra

Factor the expression 25x^2- 60xy+36y^2 into a product of binomials
8. ### Algebra

-3y^3+24y^2-36y
9. ### college algebra

8x+9y=33 x-36y=-330 elimination
10. ### Algebra: Please Help.

16y^3+48y^2=-36y I need help setting up the problem.

More Similar Questions