r^2+24r+169=0

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Solution for r^2+24r+169=0 equation:


Simplifying
r2 + 24r + 169 = 0

Reorder the terms:
169 + 24r + r2 = 0

Solving
169 + 24r + r2 = 0

Solving for variable 'r'.

Begin completing the square.

Move the constant term to the right:

Add '-169' to each side of the equation.
169 + 24r + -169 + r2 = 0 + -169

Reorder the terms:
169 + -169 + 24r + r2 = 0 + -169

Combine like terms: 169 + -169 = 0
0 + 24r + r2 = 0 + -169
24r + r2 = 0 + -169

Combine like terms: 0 + -169 = -169
24r + r2 = -169

The r term is 24r.  Take half its coefficient (12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
24r + 144 + r2 = -169 + 144

Reorder the terms:
144 + 24r + r2 = -169 + 144

Combine like terms: -169 + 144 = -25
144 + 24r + r2 = -25

Factor a perfect square on the left side:
(r + 12)(r + 12) = -25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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