Solving x in Equation: x-b(x2-1)b/2 = a

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SUMMARY

The equation x - b(x² - 1)b/2 = a was successfully manipulated to isolate x. The correct final expression for x is x = ±[1 - a²/b]⁻¹/₂. The solution involved applying the power of -1/b to both sides and simplifying the resulting expressions. The discussion confirms the accuracy of the derived formula with minor adjustments for the positive and negative roots.

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Homework Statement



I made x the subject and i want to make sure i did it correctly

x-b(x2-1)b/2 = a

Homework Equations





The Attempt at a Solution



power both sides by -1/b

x(x2-1)-1/2 = (a)-1/b

(1-x-2)-1/2 = a-1/b

x-2 = 1-a2/b

x = [1-a2/b]-1/2

thank you
 
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sara_87 said:

Homework Statement



I made x the subject and i want to make sure i did it correctly

x-b(x2-1)b/2 = a

Homework Equations





The Attempt at a Solution



power both sides by -1/b

x(x2-1)-1/2 = (a)-1/b

(1-x-2)-1/2 = a-1/b

x-2 = 1-a2/b

x = [1-a2/b]-1/2

thank you
You should have x = +/-[1-a2/b]-1/2
Other than that, it looks fine.
 

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