=4*x^2+4*xi-1

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Solution for =4*x^2+4*xi-1 equation: 


Simplifying
0 = 4x2 + 4xi + -1

Reorder the terms:
0 = -1 + 4ix + 4x2

Solving
0 = -1 + 4ix + 4x2

Solving for variable 'i'.

Move all terms containing i to the left, all other terms to the right.

Add '-4ix' to each side of the equation.
0 + -4ix = -1 + 4ix + -4ix + 4x2
Remove the zero:
-4ix = -1 + 4ix + -4ix + 4x2

Combine like terms: 4ix + -4ix = 0
-4ix = -1 + 0 + 4x2
-4ix = -1 + 4x2

Divide each side by '-4x'.
i = 0.25x-1 + -1x

Simplifying
i = 0.25x-1 + -1x

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