4b^2+b+7=4

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Solution for 4b^2+b+7=4 equation:


Simplifying
4b2 + b + 7 = 4

Reorder the terms:
7 + b + 4b2 = 4

Solving
7 + b + 4b2 = 4

Solving for variable 'b'.

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

Combine like terms: 7 + -4 = 3
3 + b + 4b2 = 4 + -4

Combine like terms: 4 + -4 = 0
3 + b + 4b2 = 0

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

Divide each side by '4'.
0.75 + 0.25b + b2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + 0.25b + -0.75 + b2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + 0.25b + b2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + 0.25b + b2 = 0 + -0.75
0.25b + b2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
0.25b + b2 = -0.75

The b term is b.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.25b + 0.25 + b2 = -0.75 + 0.25

Reorder the terms:
0.25 + 0.25b + b2 = -0.75 + 0.25

Combine like terms: -0.75 + 0.25 = -0.5
0.25 + 0.25b + b2 = -0.5

Factor a perfect square on the left side:
(b + 0.5)(b + 0.5) = -0.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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