0=-39x^2-12x+95

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Solution for 0=-39x^2-12x+95 equation:


Simplifying
0 = -39x2 + -12x + 95

Reorder the terms:
0 = 95 + -12x + -39x2

Solving
0 = 95 + -12x + -39x2

Solving for variable 'x'.

Combine like terms: 0 + -95 = -95
-95 + 12x + 39x2 = 95 + -12x + -39x2 + -95 + 12x + 39x2

Reorder the terms:
-95 + 12x + 39x2 = 95 + -95 + -12x + 12x + -39x2 + 39x2

Combine like terms: 95 + -95 = 0
-95 + 12x + 39x2 = 0 + -12x + 12x + -39x2 + 39x2
-95 + 12x + 39x2 = -12x + 12x + -39x2 + 39x2

Combine like terms: -12x + 12x = 0
-95 + 12x + 39x2 = 0 + -39x2 + 39x2
-95 + 12x + 39x2 = -39x2 + 39x2

Combine like terms: -39x2 + 39x2 = 0
-95 + 12x + 39x2 = 0

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

Divide each side by '39'.
-2.435897436 + 0.3076923077x + x2 = 0

Move the constant term to the right:

Add '2.435897436' to each side of the equation.
-2.435897436 + 0.3076923077x + 2.435897436 + x2 = 0 + 2.435897436

Reorder the terms:
-2.435897436 + 2.435897436 + 0.3076923077x + x2 = 0 + 2.435897436

Combine like terms: -2.435897436 + 2.435897436 = 0.000000000
0.000000000 + 0.3076923077x + x2 = 0 + 2.435897436
0.3076923077x + x2 = 0 + 2.435897436

Combine like terms: 0 + 2.435897436 = 2.435897436
0.3076923077x + x2 = 2.435897436

The x term is 0.3076923077x.  Take half its coefficient (0.1538461539).
Square it (0.02366863907) and add it to both sides.

Add '0.02366863907' to each side of the equation.
0.3076923077x + 0.02366863907 + x2 = 2.435897436 + 0.02366863907

Reorder the terms:
0.02366863907 + 0.3076923077x + x2 = 2.435897436 + 0.02366863907

Combine like terms: 2.435897436 + 0.02366863907 = 2.45956607507
0.02366863907 + 0.3076923077x + x2 = 2.45956607507

Factor a perfect square on the left side:
(x + 0.1538461539)(x + 0.1538461539) = 2.45956607507

Calculate the square root of the right side: 1.568300378

Break this problem into two subproblems by setting 
(x + 0.1538461539) equal to 1.568300378 and -1.568300378.

Subproblem 1

x + 0.1538461539 = 1.568300378 Simplifying x + 0.1538461539 = 1.568300378 Reorder the terms: 0.1538461539 + x = 1.568300378 Solving 0.1538461539 + x = 1.568300378 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1538461539' to each side of the equation. 0.1538461539 + -0.1538461539 + x = 1.568300378 + -0.1538461539 Combine like terms: 0.1538461539 + -0.1538461539 = 0.0000000000 0.0000000000 + x = 1.568300378 + -0.1538461539 x = 1.568300378 + -0.1538461539 Combine like terms: 1.568300378 + -0.1538461539 = 1.4144542241 x = 1.4144542241 Simplifying x = 1.4144542241

Subproblem 2

x + 0.1538461539 = -1.568300378 Simplifying x + 0.1538461539 = -1.568300378 Reorder the terms: 0.1538461539 + x = -1.568300378 Solving 0.1538461539 + x = -1.568300378 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1538461539' to each side of the equation. 0.1538461539 + -0.1538461539 + x = -1.568300378 + -0.1538461539 Combine like terms: 0.1538461539 + -0.1538461539 = 0.0000000000 0.0000000000 + x = -1.568300378 + -0.1538461539 x = -1.568300378 + -0.1538461539 Combine like terms: -1.568300378 + -0.1538461539 = -1.7221465319 x = -1.7221465319 Simplifying x = -1.7221465319

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.4144542241, -1.7221465319}

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