2x^2+56x-29=0

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Solution for 2x^2+56x-29=0 equation:


Simplifying
2x2 + 56x + -29 = 0

Reorder the terms:
-29 + 56x + 2x2 = 0

Solving
-29 + 56x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-14.5 + 28x + x2 = 0

Move the constant term to the right:

Add '14.5' to each side of the equation.
-14.5 + 28x + 14.5 + x2 = 0 + 14.5

Reorder the terms:
-14.5 + 14.5 + 28x + x2 = 0 + 14.5

Combine like terms: -14.5 + 14.5 = 0.0
0.0 + 28x + x2 = 0 + 14.5
28x + x2 = 0 + 14.5

Combine like terms: 0 + 14.5 = 14.5
28x + x2 = 14.5

The x term is 28x.  Take half its coefficient (14).
Square it (196) and add it to both sides.

Add '196' to each side of the equation.
28x + 196 + x2 = 14.5 + 196

Reorder the terms:
196 + 28x + x2 = 14.5 + 196

Combine like terms: 14.5 + 196 = 210.5
196 + 28x + x2 = 210.5

Factor a perfect square on the left side:
(x + 14)(x + 14) = 210.5

Calculate the square root of the right side: 14.508618129

Break this problem into two subproblems by setting 
(x + 14) equal to 14.508618129 and -14.508618129.

Subproblem 1

x + 14 = 14.508618129 Simplifying x + 14 = 14.508618129 Reorder the terms: 14 + x = 14.508618129 Solving 14 + x = 14.508618129 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = 14.508618129 + -14 Combine like terms: 14 + -14 = 0 0 + x = 14.508618129 + -14 x = 14.508618129 + -14 Combine like terms: 14.508618129 + -14 = 0.508618129 x = 0.508618129 Simplifying x = 0.508618129

Subproblem 2

x + 14 = -14.508618129 Simplifying x + 14 = -14.508618129 Reorder the terms: 14 + x = -14.508618129 Solving 14 + x = -14.508618129 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = -14.508618129 + -14 Combine like terms: 14 + -14 = 0 0 + x = -14.508618129 + -14 x = -14.508618129 + -14 Combine like terms: -14.508618129 + -14 = -28.508618129 x = -28.508618129 Simplifying x = -28.508618129

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.508618129, -28.508618129}

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