x^2+8x+2.33=0

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Solution for x^2+8x+2.33=0 equation:


Simplifying
x2 + 8x + 2.33 = 0

Reorder the terms:
2.33 + 8x + x2 = 0

Solving
2.33 + 8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-2.33' to each side of the equation.
2.33 + 8x + -2.33 + x2 = 0 + -2.33

Reorder the terms:
2.33 + -2.33 + 8x + x2 = 0 + -2.33

Combine like terms: 2.33 + -2.33 = 0.00
0.00 + 8x + x2 = 0 + -2.33
8x + x2 = 0 + -2.33

Combine like terms: 0 + -2.33 = -2.33
8x + x2 = -2.33

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = -2.33 + 16

Reorder the terms:
16 + 8x + x2 = -2.33 + 16

Combine like terms: -2.33 + 16 = 13.67
16 + 8x + x2 = 13.67

Factor a perfect square on the left side:
(x + 4)(x + 4) = 13.67

Calculate the square root of the right side: 3.697296309

Break this problem into two subproblems by setting 
(x + 4) equal to 3.697296309 and -3.697296309.

Subproblem 1

x + 4 = 3.697296309 Simplifying x + 4 = 3.697296309 Reorder the terms: 4 + x = 3.697296309 Solving 4 + x = 3.697296309 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 3.697296309 + -4 Combine like terms: 4 + -4 = 0 0 + x = 3.697296309 + -4 x = 3.697296309 + -4 Combine like terms: 3.697296309 + -4 = -0.302703691 x = -0.302703691 Simplifying x = -0.302703691

Subproblem 2

x + 4 = -3.697296309 Simplifying x + 4 = -3.697296309 Reorder the terms: 4 + x = -3.697296309 Solving 4 + x = -3.697296309 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -3.697296309 + -4 Combine like terms: 4 + -4 = 0 0 + x = -3.697296309 + -4 x = -3.697296309 + -4 Combine like terms: -3.697296309 + -4 = -7.697296309 x = -7.697296309 Simplifying x = -7.697296309

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.302703691, -7.697296309}

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