r^2+4=-1

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Solution for r^2+4=-1 equation:


Simplifying
r2 + 4 = -1

Reorder the terms:
4 + r2 = -1

Solving
4 + r2 = -1

Solving for variable 'r'.

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

Add '-4' to each side of the equation.
4 + -4 + r2 = -1 + -4

Combine like terms: 4 + -4 = 0
0 + r2 = -1 + -4
r2 = -1 + -4

Combine like terms: -1 + -4 = -5
r2 = -5

Simplifying
r2 = -5

Reorder the terms:
5 + r2 = -5 + 5

Combine like terms: -5 + 5 = 0
5 + r2 = 0

The solution to this equation could not be determined.

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