SOLUTION: how do i answer this question: 100 = (5 / 1.045) + [ 105 / (1 + d2)^2 ]

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Question 172980: how do i answer this question: 100 = (5 / 1.045) + [ 105 / (1 + d2)^2 ]
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
We have to get d on one side and everything else on the other.
(5 / 1.045) + [ 105 / (1 + d2)^2 ]=100
105/(1+d^2)^2=100-(5/1.045)
=(104.5-5)/1.045
=99.5/1.045
(1+d^2)^2/105=1.045/99.5
(1+d^2)^2=105*1.045/99.5
=1.027963819...
1+d^2=sqrt(1.027963819...)
=1.050125621
d^2=1.050125621... -1
=0.050125621...
d=sqrt(0.050125621...)
=0.2238875178...
.
Ed