Thursday

December 18, 2014

December 18, 2014

Posted by **Jon** on Tuesday, May 20, 2008 at 1:02pm.

x=2y

x^2+2y^2=18

(2y)^2+2y^2=18

4y^2+2y^2=18

6y^2=18

y^2=3

y=+-3

x=2(+-3)

x=+-23

(+-2sqrt3,+-sqrt3)

2)Simplify, (d/(d^2-9)) + (5/(2d+6))

[d / (d^2 - 9)] + [5 / (2d + 6)]

= [d / (d - 3) (d +3)] + [5 / 2 (d + 3)]

= [2d + (5 {d - 3})] / [2 (d + 3) (d - 3)]

= [2d + 5d - 15] / [2 (d + 3) (d - 3)]

= (7d - 15) / [2 (d + 3) (d - 3)]

= (7d - 15) / (2d^2 - 18)

**Answer this Question**

**Related Questions**

Algebra - Find the exact solution(s) of the system: x^2/4-y^2=1 and x=y^2+1 A)(4...

Math - Find the exact solution(s) of the system: x^2/4-y^2=1 and x=y^2+1 A)(4,...

algebra - 1)What is the 4x^2=y^2+8y+32 answer= either hyperbola or parabola 2)...

to bobpursley,math,correction - (sqrt3 + 5)(sqrt3 -3) ? multiply that out sqrt3*...

trigonometry - Using exact values,find the value of: (A=30degrees) sin 2A + tan ...

Algebra 1 - if i solve this problem vertically; (1+ sqrt3)*(1+ sqrt3) do i get 5...

pre calc - find all solutions on 0 is greater than or equal to theta < 2pi ...

math - find all solutions on 0 is greater than or equal to theta < 2pi cos ...

Algebra II - Find the exact solution(s) of the system: (x^2/4)-y^2=1 and x=y^2+1...

Algebra II - Find the exact solution(s) of the system: (x^2/4)-y^2=1 and x=y^2+1...