4-z^2=

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Solution for 4-z^2= equation: 


Simplifying
4 + -1z2 = 0

Solving
4 + -1z2 = 0

Solving for variable 'z'.

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

Add '-4' to each side of the equation.
4 + -4 + -1z2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -1z2 = 0 + -4
-1z2 = 0 + -4

Combine like terms: 0 + -4 = -4
-1z2 = -4

Divide each side by '-1'.
z2 = 4

Simplifying
z2 = 4

Take the square root of each side:
z = {-2, 2}

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