r^2-18+56=0

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Solution for r^2-18+56=0 equation:


Simplifying
r2 + -18 + 56 = 0

Reorder the terms:
-18 + 56 + r2 = 0

Combine like terms: -18 + 56 = 38
38 + r2 = 0

Solving
38 + r2 = 0

Solving for variable 'r'.

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

Add '-38' to each side of the equation.
38 + -38 + r2 = 0 + -38

Combine like terms: 38 + -38 = 0
0 + r2 = 0 + -38
r2 = 0 + -38

Combine like terms: 0 + -38 = -38
r2 = -38

Simplifying
r2 = -38

Reorder the terms:
38 + r2 = -38 + 38

Combine like terms: -38 + 38 = 0
38 + r2 = 0

The solution to this equation could not be determined.

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