Area=x(x+4)

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Solution for Area=x(x+4) equation: 


Simplifying
Area = x(x + 4)

Reorder the terms:
aerA = x(4 + x)
aerA = (4 * x + x * x)
aerA = (4x + x2)

Solving
aerA = 4x + x2

Solving for variable 'a'.

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

Divide each side by 'erA'.
a = 4e-1r-1xA-1 + e-1r-1x2A-1

Simplifying
a = 4e-1r-1xA-1 + e-1r-1x2A-1

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