z^2-31=0

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Solution for z^2-31=0 equation: 


Simplifying
z2 + -31 = 0

Reorder the terms:
-31 + z2 = 0

Solving
-31 + z2 = 0

Solving for variable 'z'.

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

Add '31' to each side of the equation.
-31 + 31 + z2 = 0 + 31

Combine like terms: -31 + 31 = 0
0 + z2 = 0 + 31
z2 = 0 + 31

Combine like terms: 0 + 31 = 31
z2 = 31

Simplifying
z2 = 31

Take the square root of each side:
z = {-5.567764363, 5.567764363}

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