u(x)=x^2+3

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Solution for u(x)=x^2+3 equation: 


Simplifying
u(x) = x2 + 3

Multiply u * x
ux = x2 + 3

Reorder the terms:
ux = 3 + x2

Solving
ux = 3 + x2

Solving for variable 'u'.

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

Divide each side by 'x'.
u = 3x-1 + x

Simplifying
u = 3x-1 + x

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