z^2-25=4

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Solution for z^2-25=4 equation: 


Simplifying
z2 + -25 = 4

Reorder the terms:
-25 + z2 = 4

Solving
-25 + z2 = 4

Solving for variable 'z'.

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

Add '25' to each side of the equation.
-25 + 25 + z2 = 4 + 25

Combine like terms: -25 + 25 = 0
0 + z2 = 4 + 25
z2 = 4 + 25

Combine like terms: 4 + 25 = 29
z2 = 29

Simplifying
z2 = 29

Take the square root of each side:
z = {-5.385164807, 5.385164807}

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