100-x^2=19

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Solution for 100-x^2=19 equation: 


Simplifying
100 + -1x2 = 19

Solving
100 + -1x2 = 19

Solving for variable 'x'.

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

Add '-100' to each side of the equation.
100 + -100 + -1x2 = 19 + -100

Combine like terms: 100 + -100 = 0
0 + -1x2 = 19 + -100
-1x2 = 19 + -100

Combine like terms: 19 + -100 = -81
-1x2 = -81

Divide each side by '-1'.
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}

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