z^2=2

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Solution for z^2=2 equation: 


Simplifying
z2 = 2

Solving
z2 = 2

Solving for variable 'z'.

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

Simplifying
z2 = 2

Take the square root of each side:
z = {-1.414213562, 1.414213562}

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