12x^2+43x-35=0

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Solution for 12x^2+43x-35=0 equation:


Simplifying
12x2 + 43x + -35 = 0

Reorder the terms:
-35 + 43x + 12x2 = 0

Solving
-35 + 43x + 12x2 = 0

Solving for variable 'x'.

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

Divide each side by '12'.
-2.916666667 + 3.583333333x + x2 = 0

Move the constant term to the right:

Add '2.916666667' to each side of the equation.
-2.916666667 + 3.583333333x + 2.916666667 + x2 = 0 + 2.916666667

Reorder the terms:
-2.916666667 + 2.916666667 + 3.583333333x + x2 = 0 + 2.916666667

Combine like terms: -2.916666667 + 2.916666667 = 0.000000000
0.000000000 + 3.583333333x + x2 = 0 + 2.916666667
3.583333333x + x2 = 0 + 2.916666667

Combine like terms: 0 + 2.916666667 = 2.916666667
3.583333333x + x2 = 2.916666667

The x term is 3.583333333x.  Take half its coefficient (1.791666667).
Square it (3.210069446) and add it to both sides.

Add '3.210069446' to each side of the equation.
3.583333333x + 3.210069446 + x2 = 2.916666667 + 3.210069446

Reorder the terms:
3.210069446 + 3.583333333x + x2 = 2.916666667 + 3.210069446

Combine like terms: 2.916666667 + 3.210069446 = 6.126736113
3.210069446 + 3.583333333x + x2 = 6.126736113

Factor a perfect square on the left side:
(x + 1.791666667)(x + 1.791666667) = 6.126736113

Calculate the square root of the right side: 2.475224457

Break this problem into two subproblems by setting 
(x + 1.791666667) equal to 2.475224457 and -2.475224457.

Subproblem 1

x + 1.791666667 = 2.475224457 Simplifying x + 1.791666667 = 2.475224457 Reorder the terms: 1.791666667 + x = 2.475224457 Solving 1.791666667 + x = 2.475224457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.791666667' to each side of the equation. 1.791666667 + -1.791666667 + x = 2.475224457 + -1.791666667 Combine like terms: 1.791666667 + -1.791666667 = 0.000000000 0.000000000 + x = 2.475224457 + -1.791666667 x = 2.475224457 + -1.791666667 Combine like terms: 2.475224457 + -1.791666667 = 0.68355779 x = 0.68355779 Simplifying x = 0.68355779

Subproblem 2

x + 1.791666667 = -2.475224457 Simplifying x + 1.791666667 = -2.475224457 Reorder the terms: 1.791666667 + x = -2.475224457 Solving 1.791666667 + x = -2.475224457 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.791666667' to each side of the equation. 1.791666667 + -1.791666667 + x = -2.475224457 + -1.791666667 Combine like terms: 1.791666667 + -1.791666667 = 0.000000000 0.000000000 + x = -2.475224457 + -1.791666667 x = -2.475224457 + -1.791666667 Combine like terms: -2.475224457 + -1.791666667 = -4.266891124 x = -4.266891124 Simplifying x = -4.266891124

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.68355779, -4.266891124}

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