3x^2+29x-12=

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Solution for 3x^2+29x-12= equation:


Simplifying
3x2 + 29x + -12 = 0

Reorder the terms:
-12 + 29x + 3x2 = 0

Solving
-12 + 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'.
-4 + 9.666666667x + x2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 9.666666667x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + 9.666666667x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 9.666666667x + x2 = 0 + 4
9.666666667x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
9.666666667x + x2 = 4

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 = 4 + 23.36111112

Reorder the terms:
23.36111112 + 9.666666667x + x2 = 4 + 23.36111112

Combine like terms: 4 + 23.36111112 = 27.36111112
23.36111112 + 9.666666667x + x2 = 27.36111112

Factor a perfect square on the left side:
(x + 4.833333334)(x + 4.833333334) = 27.36111112

Calculate the square root of the right side: 5.230784943

Break this problem into two subproblems by setting 
(x + 4.833333334) equal to 5.230784943 and -5.230784943.

Subproblem 1

x + 4.833333334 = 5.230784943 Simplifying x + 4.833333334 = 5.230784943 Reorder the terms: 4.833333334 + x = 5.230784943 Solving 4.833333334 + x = 5.230784943 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 = 5.230784943 + -4.833333334 Combine like terms: 4.833333334 + -4.833333334 = 0.000000000 0.000000000 + x = 5.230784943 + -4.833333334 x = 5.230784943 + -4.833333334 Combine like terms: 5.230784943 + -4.833333334 = 0.397451609 x = 0.397451609 Simplifying x = 0.397451609

Subproblem 2

x + 4.833333334 = -5.230784943 Simplifying x + 4.833333334 = -5.230784943 Reorder the terms: 4.833333334 + x = -5.230784943 Solving 4.833333334 + x = -5.230784943 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 = -5.230784943 + -4.833333334 Combine like terms: 4.833333334 + -4.833333334 = 0.000000000 0.000000000 + x = -5.230784943 + -4.833333334 x = -5.230784943 + -4.833333334 Combine like terms: -5.230784943 + -4.833333334 = -10.064118277 x = -10.064118277 Simplifying x = -10.064118277

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.397451609, -10.064118277}

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