18x^2-29x-6=0

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Solution for 18x^2-29x-6=0 equation:


Simplifying
18x2 + -29x + -6 = 0

Reorder the terms:
-6 + -29x + 18x2 = 0

Solving
-6 + -29x + 18x2 = 0

Solving for variable 'x'.

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

Divide each side by '18'.
-0.3333333333 + -1.611111111x + x2 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + -1.611111111x + 0.3333333333 + x2 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + -1.611111111x + x2 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + -1.611111111x + x2 = 0 + 0.3333333333
-1.611111111x + x2 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
-1.611111111x + x2 = 0.3333333333

The x term is -1.611111111x.  Take half its coefficient (-0.8055555555).
Square it (0.6489197530) and add it to both sides.

Add '0.6489197530' to each side of the equation.
-1.611111111x + 0.6489197530 + x2 = 0.3333333333 + 0.6489197530

Reorder the terms:
0.6489197530 + -1.611111111x + x2 = 0.3333333333 + 0.6489197530

Combine like terms: 0.3333333333 + 0.6489197530 = 0.9822530863
0.6489197530 + -1.611111111x + x2 = 0.9822530863

Factor a perfect square on the left side:
(x + -0.8055555555)(x + -0.8055555555) = 0.9822530863

Calculate the square root of the right side: 0.991086821

Break this problem into two subproblems by setting 
(x + -0.8055555555) equal to 0.991086821 and -0.991086821.

Subproblem 1

x + -0.8055555555 = 0.991086821 Simplifying x + -0.8055555555 = 0.991086821 Reorder the terms: -0.8055555555 + x = 0.991086821 Solving -0.8055555555 + x = 0.991086821 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8055555555' to each side of the equation. -0.8055555555 + 0.8055555555 + x = 0.991086821 + 0.8055555555 Combine like terms: -0.8055555555 + 0.8055555555 = 0.0000000000 0.0000000000 + x = 0.991086821 + 0.8055555555 x = 0.991086821 + 0.8055555555 Combine like terms: 0.991086821 + 0.8055555555 = 1.7966423765 x = 1.7966423765 Simplifying x = 1.7966423765

Subproblem 2

x + -0.8055555555 = -0.991086821 Simplifying x + -0.8055555555 = -0.991086821 Reorder the terms: -0.8055555555 + x = -0.991086821 Solving -0.8055555555 + x = -0.991086821 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8055555555' to each side of the equation. -0.8055555555 + 0.8055555555 + x = -0.991086821 + 0.8055555555 Combine like terms: -0.8055555555 + 0.8055555555 = 0.0000000000 0.0000000000 + x = -0.991086821 + 0.8055555555 x = -0.991086821 + 0.8055555555 Combine like terms: -0.991086821 + 0.8055555555 = -0.1855312655 x = -0.1855312655 Simplifying x = -0.1855312655

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.7966423765, -0.1855312655}

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