If you want to solve the equation for the variable 'd':

Replace 'd^(1/3)' by 'x' and rewrite the equation:

Then the equation will be:

3x^2 - x - 4 = 0

Now, first solve for 'x' and then go back to solving for 'd'.

The solutions for 'x' in the above quadratic equations are:

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Solving d^(1/3) = 4/3 we find the first solution:

d1 = 64/27

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Solving d^(1/3) = -1 we find the second solution:

d2 = -1

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