3x^2+29x-5.7=0

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Solution for 3x^2+29x-5.7=0 equation:


Simplifying
3x2 + 29x + -5.7 = 0

Reorder the terms:
-5.7 + 29x + 3x2 = 0

Solving
-5.7 + 29x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-1.9 + 9.666666667x + x2 = 0

Move the constant term to the right:

Add '1.9' to each side of the equation.
-1.9 + 9.666666667x + 1.9 + x2 = 0 + 1.9

Reorder the terms:
-1.9 + 1.9 + 9.666666667x + x2 = 0 + 1.9

Combine like terms: -1.9 + 1.9 = 0.0
0.0 + 9.666666667x + x2 = 0 + 1.9
9.666666667x + x2 = 0 + 1.9

Combine like terms: 0 + 1.9 = 1.9
9.666666667x + x2 = 1.9

The x term is 9.666666667x.  Take half its coefficient (4.833333334).
Square it (23.36111112) and add it to both sides.

Add '23.36111112' to each side of the equation.
9.666666667x + 23.36111112 + x2 = 1.9 + 23.36111112

Reorder the terms:
23.36111112 + 9.666666667x + x2 = 1.9 + 23.36111112

Combine like terms: 1.9 + 23.36111112 = 25.26111112
23.36111112 + 9.666666667x + x2 = 25.26111112

Factor a perfect square on the left side:
(x + 4.833333334)(x + 4.833333334) = 25.26111112

Calculate the square root of the right side: 5.026043287

Break this problem into two subproblems by setting 
(x + 4.833333334) equal to 5.026043287 and -5.026043287.

Subproblem 1

x + 4.833333334 = 5.026043287 Simplifying x + 4.833333334 = 5.026043287 Reorder the terms: 4.833333334 + x = 5.026043287 Solving 4.833333334 + x = 5.026043287 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.833333334' to each side of the equation. 4.833333334 + -4.833333334 + x = 5.026043287 + -4.833333334 Combine like terms: 4.833333334 + -4.833333334 = 0.000000000 0.000000000 + x = 5.026043287 + -4.833333334 x = 5.026043287 + -4.833333334 Combine like terms: 5.026043287 + -4.833333334 = 0.192709953 x = 0.192709953 Simplifying x = 0.192709953

Subproblem 2

x + 4.833333334 = -5.026043287 Simplifying x + 4.833333334 = -5.026043287 Reorder the terms: 4.833333334 + x = -5.026043287 Solving 4.833333334 + x = -5.026043287 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.833333334' to each side of the equation. 4.833333334 + -4.833333334 + x = -5.026043287 + -4.833333334 Combine like terms: 4.833333334 + -4.833333334 = 0.000000000 0.000000000 + x = -5.026043287 + -4.833333334 x = -5.026043287 + -4.833333334 Combine like terms: -5.026043287 + -4.833333334 = -9.859376621 x = -9.859376621 Simplifying x = -9.859376621

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.192709953, -9.859376621}

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