12x^2+17x-12=0

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Solution for 12x^2+17x-12=0 equation:


Simplifying
12x2 + 17x + -12 = 0

Reorder the terms:
-12 + 17x + 12x2 = 0

Solving
-12 + 17x + 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'.
-1 + 1.416666667x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 1.416666667x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 1.416666667x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 1.416666667x + x2 = 0 + 1
1.416666667x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
1.416666667x + x2 = 1

The x term is 1.416666667x.  Take half its coefficient (0.7083333335).
Square it (0.5017361113) and add it to both sides.

Add '0.5017361113' to each side of the equation.
1.416666667x + 0.5017361113 + x2 = 1 + 0.5017361113

Reorder the terms:
0.5017361113 + 1.416666667x + x2 = 1 + 0.5017361113

Combine like terms: 1 + 0.5017361113 = 1.5017361113
0.5017361113 + 1.416666667x + x2 = 1.5017361113

Factor a perfect square on the left side:
(x + 0.7083333335)(x + 0.7083333335) = 1.5017361113

Calculate the square root of the right side: 1.225453431

Break this problem into two subproblems by setting 
(x + 0.7083333335) equal to 1.225453431 and -1.225453431.

Subproblem 1

x + 0.7083333335 = 1.225453431 Simplifying x + 0.7083333335 = 1.225453431 Reorder the terms: 0.7083333335 + x = 1.225453431 Solving 0.7083333335 + x = 1.225453431 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7083333335' to each side of the equation. 0.7083333335 + -0.7083333335 + x = 1.225453431 + -0.7083333335 Combine like terms: 0.7083333335 + -0.7083333335 = 0.0000000000 0.0000000000 + x = 1.225453431 + -0.7083333335 x = 1.225453431 + -0.7083333335 Combine like terms: 1.225453431 + -0.7083333335 = 0.5171200975 x = 0.5171200975 Simplifying x = 0.5171200975

Subproblem 2

x + 0.7083333335 = -1.225453431 Simplifying x + 0.7083333335 = -1.225453431 Reorder the terms: 0.7083333335 + x = -1.225453431 Solving 0.7083333335 + x = -1.225453431 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7083333335' to each side of the equation. 0.7083333335 + -0.7083333335 + x = -1.225453431 + -0.7083333335 Combine like terms: 0.7083333335 + -0.7083333335 = 0.0000000000 0.0000000000 + x = -1.225453431 + -0.7083333335 x = -1.225453431 + -0.7083333335 Combine like terms: -1.225453431 + -0.7083333335 = -1.9337867645 x = -1.9337867645 Simplifying x = -1.9337867645

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.5171200975, -1.9337867645}

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