6.99x^2+2.75x-5.29=0

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Solution for 6.99x^2+2.75x-5.29=0 equation:


Simplifying
6.99x2 + 2.75x + -5.29 = 0

Reorder the terms:
-5.29 + 2.75x + 6.99x2 = 0

Solving
-5.29 + 2.75x + 6.99x2 = 0

Solving for variable 'x'.

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

Divide each side by '6.99'.
-0.756795422 + 0.3934191702x + x2 = 0

Move the constant term to the right:

Add '0.756795422' to each side of the equation.
-0.756795422 + 0.3934191702x + 0.756795422 + x2 = 0 + 0.756795422

Reorder the terms:
-0.756795422 + 0.756795422 + 0.3934191702x + x2 = 0 + 0.756795422

Combine like terms: -0.756795422 + 0.756795422 = 0.000000000
0.000000000 + 0.3934191702x + x2 = 0 + 0.756795422
0.3934191702x + x2 = 0 + 0.756795422

Combine like terms: 0 + 0.756795422 = 0.756795422
0.3934191702x + x2 = 0.756795422

The x term is 0.3934191702x.  Take half its coefficient (0.1967095851).
Square it (0.03869466087) and add it to both sides.

Add '0.03869466087' to each side of the equation.
0.3934191702x + 0.03869466087 + x2 = 0.756795422 + 0.03869466087

Reorder the terms:
0.03869466087 + 0.3934191702x + x2 = 0.756795422 + 0.03869466087

Combine like terms: 0.756795422 + 0.03869466087 = 0.79549008287
0.03869466087 + 0.3934191702x + x2 = 0.79549008287

Factor a perfect square on the left side:
(x + 0.1967095851)(x + 0.1967095851) = 0.79549008287

Calculate the square root of the right side: 0.891902507

Break this problem into two subproblems by setting 
(x + 0.1967095851) equal to 0.891902507 and -0.891902507.

Subproblem 1

x + 0.1967095851 = 0.891902507 Simplifying x + 0.1967095851 = 0.891902507 Reorder the terms: 0.1967095851 + x = 0.891902507 Solving 0.1967095851 + x = 0.891902507 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1967095851' to each side of the equation. 0.1967095851 + -0.1967095851 + x = 0.891902507 + -0.1967095851 Combine like terms: 0.1967095851 + -0.1967095851 = 0.0000000000 0.0000000000 + x = 0.891902507 + -0.1967095851 x = 0.891902507 + -0.1967095851 Combine like terms: 0.891902507 + -0.1967095851 = 0.6951929219 x = 0.6951929219 Simplifying x = 0.6951929219

Subproblem 2

x + 0.1967095851 = -0.891902507 Simplifying x + 0.1967095851 = -0.891902507 Reorder the terms: 0.1967095851 + x = -0.891902507 Solving 0.1967095851 + x = -0.891902507 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1967095851' to each side of the equation. 0.1967095851 + -0.1967095851 + x = -0.891902507 + -0.1967095851 Combine like terms: 0.1967095851 + -0.1967095851 = 0.0000000000 0.0000000000 + x = -0.891902507 + -0.1967095851 x = -0.891902507 + -0.1967095851 Combine like terms: -0.891902507 + -0.1967095851 = -1.0886120921 x = -1.0886120921 Simplifying x = -1.0886120921

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6951929219, -1.0886120921}

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