z=(2+i)*(2+i)

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Solution for z=(2+i)*(2+i) equation: 


Simplifying
z = (2 + i)(2 + i)

Multiply (2 + i) * (2 + i)
z = (2(2 + i) + i(2 + i))
z = ((2 * 2 + i * 2) + i(2 + i))
z = ((4 + 2i) + i(2 + i))
z = (4 + 2i + (2 * i + i * i))
z = (4 + 2i + (2i + i2))

Combine like terms: 2i + 2i = 4i
z = (4 + 4i + i2)

Solving
z = 4 + 4i + i2

Solving for variable 'z'.

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

Simplifying
z = 4 + 4i + i2

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