x^2-19=1

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Solution for x^2-19=1 equation: 


Simplifying
x2 + -19 = 1

Reorder the terms:
-19 + x2 = 1

Solving
-19 + x2 = 1

Solving for variable 'x'.

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

Add '19' to each side of the equation.
-19 + 19 + x2 = 1 + 19

Combine like terms: -19 + 19 = 0
0 + x2 = 1 + 19
x2 = 1 + 19

Combine like terms: 1 + 19 = 20
x2 = 20

Simplifying
x2 = 20

Take the square root of each side:
x = {-4.472135955, 4.472135955}

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