2b^2+13b+25=0

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Solution for 2b^2+13b+25=0 equation:


Simplifying
2b2 + 13b + 25 = 0

Reorder the terms:
25 + 13b + 2b2 = 0

Solving
25 + 13b + 2b2 = 0

Solving for variable 'b'.

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

Divide each side by '2'.
12.5 + 6.5b + b2 = 0

Move the constant term to the right:

Add '-12.5' to each side of the equation.
12.5 + 6.5b + -12.5 + b2 = 0 + -12.5

Reorder the terms:
12.5 + -12.5 + 6.5b + b2 = 0 + -12.5

Combine like terms: 12.5 + -12.5 = 0.0
0.0 + 6.5b + b2 = 0 + -12.5
6.5b + b2 = 0 + -12.5

Combine like terms: 0 + -12.5 = -12.5
6.5b + b2 = -12.5

The b term is 6.5b.  Take half its coefficient (3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
6.5b + 10.5625 + b2 = -12.5 + 10.5625

Reorder the terms:
10.5625 + 6.5b + b2 = -12.5 + 10.5625

Combine like terms: -12.5 + 10.5625 = -1.9375
10.5625 + 6.5b + b2 = -1.9375

Factor a perfect square on the left side:
(b + 3.25)(b + 3.25) = -1.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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