4b^2-7b+13=0

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Solution for 4b^2-7b+13=0 equation:


Simplifying
4b2 + -7b + 13 = 0

Reorder the terms:
13 + -7b + 4b2 = 0

Solving
13 + -7b + 4b2 = 0

Solving for variable 'b'.

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

Divide each side by '4'.
3.25 + -1.75b + b2 = 0

Move the constant term to the right:

Add '-3.25' to each side of the equation.
3.25 + -1.75b + -3.25 + b2 = 0 + -3.25

Reorder the terms:
3.25 + -3.25 + -1.75b + b2 = 0 + -3.25

Combine like terms: 3.25 + -3.25 = 0.00
0.00 + -1.75b + b2 = 0 + -3.25
-1.75b + b2 = 0 + -3.25

Combine like terms: 0 + -3.25 = -3.25
-1.75b + b2 = -3.25

The b term is -1.75b.  Take half its coefficient (-0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
-1.75b + 0.765625 + b2 = -3.25 + 0.765625

Reorder the terms:
0.765625 + -1.75b + b2 = -3.25 + 0.765625

Combine like terms: -3.25 + 0.765625 = -2.484375
0.765625 + -1.75b + b2 = -2.484375

Factor a perfect square on the left side:
(b + -0.875)(b + -0.875) = -2.484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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