16r^2+32r+25=0

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Solution for 16r^2+32r+25=0 equation:


Simplifying
16r2 + 32r + 25 = 0

Reorder the terms:
25 + 32r + 16r2 = 0

Solving
25 + 32r + 16r2 = 0

Solving for variable 'r'.

Begin completing the square.  Divide all terms by
16 the coefficient of the squared term: 

Divide each side by '16'.
1.5625 + 2r + r2 = 0

Move the constant term to the right:

Add '-1.5625' to each side of the equation.
1.5625 + 2r + -1.5625 + r2 = 0 + -1.5625

Reorder the terms:
1.5625 + -1.5625 + 2r + r2 = 0 + -1.5625

Combine like terms: 1.5625 + -1.5625 = 0.0000
0.0000 + 2r + r2 = 0 + -1.5625
2r + r2 = 0 + -1.5625

Combine like terms: 0 + -1.5625 = -1.5625
2r + r2 = -1.5625

The r term is 2r.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2r + 1 + r2 = -1.5625 + 1

Reorder the terms:
1 + 2r + r2 = -1.5625 + 1

Combine like terms: -1.5625 + 1 = -0.5625
1 + 2r + r2 = -0.5625

Factor a perfect square on the left side:
(r + 1)(r + 1) = -0.5625

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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