25r^2+29r+9=0

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Solution for 25r^2+29r+9=0 equation:


Simplifying
25r2 + 29r + 9 = 0

Reorder the terms:
9 + 29r + 25r2 = 0

Solving
9 + 29r + 25r2 = 0

Solving for variable 'r'.

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

Divide each side by '25'.
0.36 + 1.16r + r2 = 0

Move the constant term to the right:

Add '-0.36' to each side of the equation.
0.36 + 1.16r + -0.36 + r2 = 0 + -0.36

Reorder the terms:
0.36 + -0.36 + 1.16r + r2 = 0 + -0.36

Combine like terms: 0.36 + -0.36 = 0.00
0.00 + 1.16r + r2 = 0 + -0.36
1.16r + r2 = 0 + -0.36

Combine like terms: 0 + -0.36 = -0.36
1.16r + r2 = -0.36

The r term is 1.16r.  Take half its coefficient (0.58).
Square it (0.3364) and add it to both sides.

Add '0.3364' to each side of the equation.
1.16r + 0.3364 + r2 = -0.36 + 0.3364

Reorder the terms:
0.3364 + 1.16r + r2 = -0.36 + 0.3364

Combine like terms: -0.36 + 0.3364 = -0.0236
0.3364 + 1.16r + r2 = -0.0236

Factor a perfect square on the left side:
(r + 0.58)(r + 0.58) = -0.0236

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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