SOLUTION: 2t^-4-5t^-2+2=0

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Question 320157: 2t^-4-5t^-2+2=0
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let v=t%5E%28-2%29, then v%5E2=t%5E%28-4%29,
2t%5E-4-5t%5E-2%2B2=2v%5E2-5v%2B2=0
2t%5E-4-5t%5E-2%2B2=%282v-1%29%28v-2%29=0
Two solutions:
2v-1=0
2v=1
v=1%2F2
1%2Ft%5E2=1%2F2
highlight%28t=sqrt%282%29%29
.
.
.
v-2=0
v=2
1%2Ft%5E2=2
t%5E2=1%2F2
highlight%28+t=sqrt%282%29%2F2%29