SOLUTION: I need to complete the square: 2d^2=8+10d

Question 162269: I need to complete the square:
2d^2=8+10d
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
I need to complete the square:
2d^2=8+10d
-----------
2d^2 - 10d - 8 = 0
d^2 - 5d - 4 = 0
The c term has to be (b/2)^2, or (-5/2)^2 = 25/4
So it's necessary to add 4+25/4 to both sides
d^2 - 5d + 25/4 = 41/4
Then take the sqrt
d - 5/2 = sqrt(41)/2 and -sqrt(41)/2
Add the 5/2
d = (5+sqrt(41))/2 and d = (5-sqrt(41))/2

RELATED QUESTIONS
Please help me solve by completing the square- 4x^=-12x + 4 or 2d^=8 +... (answered by edjones)

Parantheses in equations: I have tried now about 6 times working on these problems and (answered by venugopalramana)

I need to solve the3c+2d=2... (answered by mananth)

I need to complete the square to make a perfect square trinomial... (answered by stanbon)

How do you solve: [(3d^2 - 9d + 6) / (2d^2 - 10d + 12)][(6-2d) /... (answered by Alan3354)

This isnt a quadratic formula problem, I dont know what type of problem it is, I just... (answered by checkley75)

Hi.This word problem is basic, but I'm stumped. Coins in a bank are all dimes, nickels,... (answered by wuwei96815)

Question: The first term of an arithmetic sequence is 2; and the first, third, and... (answered by greenestamps)

I need help solving x^2+20x=6 I know the formula should be x^2+bx but I need help... (answered by Fombitz)