-22x^2-33x+18=0

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Solution for -22x^2-33x+18=0 equation:


Simplifying
-22x2 + -33x + 18 = 0

Reorder the terms:
18 + -33x + -22x2 = 0

Solving
18 + -33x + -22x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-22 the coefficient of the squared term: 

Divide each side by '-22'.
-0.8181818182 + 1.5x + x2 = 0

Move the constant term to the right:

Add '0.8181818182' to each side of the equation.
-0.8181818182 + 1.5x + 0.8181818182 + x2 = 0 + 0.8181818182

Reorder the terms:
-0.8181818182 + 0.8181818182 + 1.5x + x2 = 0 + 0.8181818182

Combine like terms: -0.8181818182 + 0.8181818182 = 0.0000000000
0.0000000000 + 1.5x + x2 = 0 + 0.8181818182
1.5x + x2 = 0 + 0.8181818182

Combine like terms: 0 + 0.8181818182 = 0.8181818182
1.5x + x2 = 0.8181818182

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 = 0.8181818182 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 0.8181818182 + 0.5625

Combine like terms: 0.8181818182 + 0.5625 = 1.3806818182
0.5625 + 1.5x + x2 = 1.3806818182

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 1.3806818182

Calculate the square root of the right side: 1.175024178

Break this problem into two subproblems by setting 
(x + 0.75) equal to 1.175024178 and -1.175024178.

Subproblem 1

x + 0.75 = 1.175024178 Simplifying x + 0.75 = 1.175024178 Reorder the terms: 0.75 + x = 1.175024178 Solving 0.75 + x = 1.175024178 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 = 1.175024178 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 1.175024178 + -0.75 x = 1.175024178 + -0.75 Combine like terms: 1.175024178 + -0.75 = 0.425024178 x = 0.425024178 Simplifying x = 0.425024178

Subproblem 2

x + 0.75 = -1.175024178 Simplifying x + 0.75 = -1.175024178 Reorder the terms: 0.75 + x = -1.175024178 Solving 0.75 + x = -1.175024178 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 = -1.175024178 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -1.175024178 + -0.75 x = -1.175024178 + -0.75 Combine like terms: -1.175024178 + -0.75 = -1.925024178 x = -1.925024178 Simplifying x = -1.925024178

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.425024178, -1.925024178}

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