A=x(x+4)

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


Simplifying
A = x(x + 4)

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

Solving
A = 4x + x2

Solving for variable 'A'.

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

Simplifying
A = 4x + x2

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