17b^2-14b-56=0

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Solution for 17b^2-14b-56=0 equation:


Simplifying
17b2 + -14b + -56 = 0

Reorder the terms:
-56 + -14b + 17b2 = 0

Solving
-56 + -14b + 17b2 = 0

Solving for variable 'b'.

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

Divide each side by '17'.
-3.294117647 + -0.8235294118b + b2 = 0

Move the constant term to the right:

Add '3.294117647' to each side of the equation.
-3.294117647 + -0.8235294118b + 3.294117647 + b2 = 0 + 3.294117647

Reorder the terms:
-3.294117647 + 3.294117647 + -0.8235294118b + b2 = 0 + 3.294117647

Combine like terms: -3.294117647 + 3.294117647 = 0.000000000
0.000000000 + -0.8235294118b + b2 = 0 + 3.294117647
-0.8235294118b + b2 = 0 + 3.294117647

Combine like terms: 0 + 3.294117647 = 3.294117647
-0.8235294118b + b2 = 3.294117647

The b term is -0.8235294118b.  Take half its coefficient (-0.4117647059).
Square it (0.1695501730) and add it to both sides.

Add '0.1695501730' to each side of the equation.
-0.8235294118b + 0.1695501730 + b2 = 3.294117647 + 0.1695501730

Reorder the terms:
0.1695501730 + -0.8235294118b + b2 = 3.294117647 + 0.1695501730

Combine like terms: 3.294117647 + 0.1695501730 = 3.46366782
0.1695501730 + -0.8235294118b + b2 = 3.46366782

Factor a perfect square on the left side:
(b + -0.4117647059)(b + -0.4117647059) = 3.46366782

Calculate the square root of the right side: 1.861093179

Break this problem into two subproblems by setting 
(b + -0.4117647059) equal to 1.861093179 and -1.861093179.

Subproblem 1

b + -0.4117647059 = 1.861093179 Simplifying b + -0.4117647059 = 1.861093179 Reorder the terms: -0.4117647059 + b = 1.861093179 Solving -0.4117647059 + b = 1.861093179 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.4117647059' to each side of the equation. -0.4117647059 + 0.4117647059 + b = 1.861093179 + 0.4117647059 Combine like terms: -0.4117647059 + 0.4117647059 = 0.0000000000 0.0000000000 + b = 1.861093179 + 0.4117647059 b = 1.861093179 + 0.4117647059 Combine like terms: 1.861093179 + 0.4117647059 = 2.2728578849 b = 2.2728578849 Simplifying b = 2.2728578849

Subproblem 2

b + -0.4117647059 = -1.861093179 Simplifying b + -0.4117647059 = -1.861093179 Reorder the terms: -0.4117647059 + b = -1.861093179 Solving -0.4117647059 + b = -1.861093179 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.4117647059' to each side of the equation. -0.4117647059 + 0.4117647059 + b = -1.861093179 + 0.4117647059 Combine like terms: -0.4117647059 + 0.4117647059 = 0.0000000000 0.0000000000 + b = -1.861093179 + 0.4117647059 b = -1.861093179 + 0.4117647059 Combine like terms: -1.861093179 + 0.4117647059 = -1.4493284731 b = -1.4493284731 Simplifying b = -1.4493284731

Solution

The solution to the problem is based on the solutions from the subproblems. b = {2.2728578849, -1.4493284731}

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