8x^2+59x+2=0

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Solution for 8x^2+59x+2=0 equation:


Simplifying
8x2 + 59x + 2 = 0

Reorder the terms:
2 + 59x + 8x2 = 0

Solving
2 + 59x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
0.25 + 7.375x + x2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + 7.375x + -0.25 + x2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + 7.375x + x2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + 7.375x + x2 = 0 + -0.25
7.375x + x2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
7.375x + x2 = -0.25

The x term is 7.375x.  Take half its coefficient (3.6875).
Square it (13.59765625) and add it to both sides.

Add '13.59765625' to each side of the equation.
7.375x + 13.59765625 + x2 = -0.25 + 13.59765625

Reorder the terms:
13.59765625 + 7.375x + x2 = -0.25 + 13.59765625

Combine like terms: -0.25 + 13.59765625 = 13.34765625
13.59765625 + 7.375x + x2 = 13.34765625

Factor a perfect square on the left side:
(x + 3.6875)(x + 3.6875) = 13.34765625

Calculate the square root of the right side: 3.653444436

Break this problem into two subproblems by setting 
(x + 3.6875) equal to 3.653444436 and -3.653444436.

Subproblem 1

x + 3.6875 = 3.653444436 Simplifying x + 3.6875 = 3.653444436 Reorder the terms: 3.6875 + x = 3.653444436 Solving 3.6875 + x = 3.653444436 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.6875' to each side of the equation. 3.6875 + -3.6875 + x = 3.653444436 + -3.6875 Combine like terms: 3.6875 + -3.6875 = 0.0000 0.0000 + x = 3.653444436 + -3.6875 x = 3.653444436 + -3.6875 Combine like terms: 3.653444436 + -3.6875 = -0.034055564 x = -0.034055564 Simplifying x = -0.034055564

Subproblem 2

x + 3.6875 = -3.653444436 Simplifying x + 3.6875 = -3.653444436 Reorder the terms: 3.6875 + x = -3.653444436 Solving 3.6875 + x = -3.653444436 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.6875' to each side of the equation. 3.6875 + -3.6875 + x = -3.653444436 + -3.6875 Combine like terms: 3.6875 + -3.6875 = 0.0000 0.0000 + x = -3.653444436 + -3.6875 x = -3.653444436 + -3.6875 Combine like terms: -3.653444436 + -3.6875 = -7.340944436 x = -7.340944436 Simplifying x = -7.340944436

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.034055564, -7.340944436}

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