12x^2+18x-41=0

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Solution for 12x^2+18x-41=0 equation:


Simplifying
12x2 + 18x + -41 = 0

Reorder the terms:
-41 + 18x + 12x2 = 0

Solving
-41 + 18x + 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'.
-3.416666667 + 1.5x + x2 = 0

Move the constant term to the right:

Add '3.416666667' to each side of the equation.
-3.416666667 + 1.5x + 3.416666667 + x2 = 0 + 3.416666667

Reorder the terms:
-3.416666667 + 3.416666667 + 1.5x + x2 = 0 + 3.416666667

Combine like terms: -3.416666667 + 3.416666667 = 0.000000000
0.000000000 + 1.5x + x2 = 0 + 3.416666667
1.5x + x2 = 0 + 3.416666667

Combine like terms: 0 + 3.416666667 = 3.416666667
1.5x + x2 = 3.416666667

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = 3.416666667 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 3.416666667 + 0.5625

Combine like terms: 3.416666667 + 0.5625 = 3.979166667
0.5625 + 1.5x + x2 = 3.979166667

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 3.979166667

Calculate the square root of the right side: 1.994784867

Break this problem into two subproblems by setting 
(x + 0.75) equal to 1.994784867 and -1.994784867.

Subproblem 1

x + 0.75 = 1.994784867 Simplifying x + 0.75 = 1.994784867 Reorder the terms: 0.75 + x = 1.994784867 Solving 0.75 + x = 1.994784867 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 1.994784867 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 1.994784867 + -0.75 x = 1.994784867 + -0.75 Combine like terms: 1.994784867 + -0.75 = 1.244784867 x = 1.244784867 Simplifying x = 1.244784867

Subproblem 2

x + 0.75 = -1.994784867 Simplifying x + 0.75 = -1.994784867 Reorder the terms: 0.75 + x = -1.994784867 Solving 0.75 + x = -1.994784867 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -1.994784867 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -1.994784867 + -0.75 x = -1.994784867 + -0.75 Combine like terms: -1.994784867 + -0.75 = -2.744784867 x = -2.744784867 Simplifying x = -2.744784867

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.244784867, -2.744784867}

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