r^2-19.36=0

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Solution for r^2-19.36=0 equation: 


Simplifying
r2 + -19.36 = 0

Reorder the terms:
-19.36 + r2 = 0

Solving
-19.36 + r2 = 0

Solving for variable 'r'.

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

Add '19.36' to each side of the equation.
-19.36 + 19.36 + r2 = 0 + 19.36

Combine like terms: -19.36 + 19.36 = 0.00
0.00 + r2 = 0 + 19.36
r2 = 0 + 19.36

Combine like terms: 0 + 19.36 = 19.36
r2 = 19.36

Simplifying
r2 = 19.36

Take the square root of each side:
r = {-4.4, 4.4}

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