r^2-14r+83=-2

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Solution for r^2-14r+83=-2 equation:


Simplifying
r2 + -14r + 83 = -2

Reorder the terms:
83 + -14r + r2 = -2

Solving
83 + -14r + r2 = -2

Solving for variable 'r'.

Reorder the terms:
83 + 2 + -14r + r2 = -2 + 2

Combine like terms: 83 + 2 = 85
85 + -14r + r2 = -2 + 2

Combine like terms: -2 + 2 = 0
85 + -14r + r2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-85' to each side of the equation.
85 + -14r + -85 + r2 = 0 + -85

Reorder the terms:
85 + -85 + -14r + r2 = 0 + -85

Combine like terms: 85 + -85 = 0
0 + -14r + r2 = 0 + -85
-14r + r2 = 0 + -85

Combine like terms: 0 + -85 = -85
-14r + r2 = -85

The r term is -14r.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14r + 49 + r2 = -85 + 49

Reorder the terms:
49 + -14r + r2 = -85 + 49

Combine like terms: -85 + 49 = -36
49 + -14r + r2 = -36

Factor a perfect square on the left side:
(r + -7)(r + -7) = -36

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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