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Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?Asked by Shawn
Solve: x^-2 - x^-1= 5/4
I have the answer as (5+/- sqrt29)/2
Is this right?
I have the answer as (5+/- sqrt29)/2
Is this right?
Answers
Answered by
Reiny
no
I multiplied all terms of your equation by 4x^2 to get
5x^2 + 4x - 4 = 0
using the formula gave me (-2 ±4√6)/5
which verified upon substitution.
you should have tried your answer in the original equation, it does not work.
I multiplied all terms of your equation by 4x^2 to get
5x^2 + 4x - 4 = 0
using the formula gave me (-2 ±4√6)/5
which verified upon substitution.
you should have tried your answer in the original equation, it does not work.
Answered by
Shawn
I tried the equation and got
(-2 }2ã6)/5
Is this the answer?
(-2 }2ã6)/5
Is this the answer?
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