-0.008x^2-0.88x+5=0

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Solution for -0.008x^2-0.88x+5=0 equation:


Simplifying
-0.008x2 + -0.88x + 5 = 0

Reorder the terms:
5 + -0.88x + -0.008x2 = 0

Solving
5 + -0.88x + -0.008x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.008 the coefficient of the squared term: 

Divide each side by '-0.008'.
-625 + 110x + x2 = 0

Move the constant term to the right:

Add '625' to each side of the equation.
-625 + 110x + 625 + x2 = 0 + 625

Reorder the terms:
-625 + 625 + 110x + x2 = 0 + 625

Combine like terms: -625 + 625 = 0
0 + 110x + x2 = 0 + 625
110x + x2 = 0 + 625

Combine like terms: 0 + 625 = 625
110x + x2 = 625

The x term is 110x.  Take half its coefficient (55).
Square it (3025) and add it to both sides.

Add '3025' to each side of the equation.
110x + 3025 + x2 = 625 + 3025

Reorder the terms:
3025 + 110x + x2 = 625 + 3025

Combine like terms: 625 + 3025 = 3650
3025 + 110x + x2 = 3650

Factor a perfect square on the left side:
(x + 55)(x + 55) = 3650

Calculate the square root of the right side: 60.415229868

Break this problem into two subproblems by setting 
(x + 55) equal to 60.415229868 and -60.415229868.

Subproblem 1

x + 55 = 60.415229868 Simplifying x + 55 = 60.415229868 Reorder the terms: 55 + x = 60.415229868 Solving 55 + x = 60.415229868 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-55' to each side of the equation. 55 + -55 + x = 60.415229868 + -55 Combine like terms: 55 + -55 = 0 0 + x = 60.415229868 + -55 x = 60.415229868 + -55 Combine like terms: 60.415229868 + -55 = 5.415229868 x = 5.415229868 Simplifying x = 5.415229868

Subproblem 2

x + 55 = -60.415229868 Simplifying x + 55 = -60.415229868 Reorder the terms: 55 + x = -60.415229868 Solving 55 + x = -60.415229868 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-55' to each side of the equation. 55 + -55 + x = -60.415229868 + -55 Combine like terms: 55 + -55 = 0 0 + x = -60.415229868 + -55 x = -60.415229868 + -55 Combine like terms: -60.415229868 + -55 = -115.415229868 x = -115.415229868 Simplifying x = -115.415229868

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.415229868, -115.415229868}

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