4x^2-33x+18=0

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Solution for 4x^2-33x+18=0 equation:


Simplifying
4x2 + -33x + 18 = 0

Reorder the terms:
18 + -33x + 4x2 = 0

Solving
18 + -33x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
4.5 + -8.25x + x2 = 0

Move the constant term to the right:

Add '-4.5' to each side of the equation.
4.5 + -8.25x + -4.5 + x2 = 0 + -4.5

Reorder the terms:
4.5 + -4.5 + -8.25x + x2 = 0 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
0.0 + -8.25x + x2 = 0 + -4.5
-8.25x + x2 = 0 + -4.5

Combine like terms: 0 + -4.5 = -4.5
-8.25x + x2 = -4.5

The x term is -8.25x.  Take half its coefficient (-4.125).
Square it (17.015625) and add it to both sides.

Add '17.015625' to each side of the equation.
-8.25x + 17.015625 + x2 = -4.5 + 17.015625

Reorder the terms:
17.015625 + -8.25x + x2 = -4.5 + 17.015625

Combine like terms: -4.5 + 17.015625 = 12.515625
17.015625 + -8.25x + x2 = 12.515625

Factor a perfect square on the left side:
(x + -4.125)(x + -4.125) = 12.515625

Calculate the square root of the right side: 3.537742925

Break this problem into two subproblems by setting 
(x + -4.125) equal to 3.537742925 and -3.537742925.

Subproblem 1

x + -4.125 = 3.537742925 Simplifying x + -4.125 = 3.537742925 Reorder the terms: -4.125 + x = 3.537742925 Solving -4.125 + x = 3.537742925 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.125' to each side of the equation. -4.125 + 4.125 + x = 3.537742925 + 4.125 Combine like terms: -4.125 + 4.125 = 0.000 0.000 + x = 3.537742925 + 4.125 x = 3.537742925 + 4.125 Combine like terms: 3.537742925 + 4.125 = 7.662742925 x = 7.662742925 Simplifying x = 7.662742925

Subproblem 2

x + -4.125 = -3.537742925 Simplifying x + -4.125 = -3.537742925 Reorder the terms: -4.125 + x = -3.537742925 Solving -4.125 + x = -3.537742925 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.125' to each side of the equation. -4.125 + 4.125 + x = -3.537742925 + 4.125 Combine like terms: -4.125 + 4.125 = 0.000 0.000 + x = -3.537742925 + 4.125 x = -3.537742925 + 4.125 Combine like terms: -3.537742925 + 4.125 = 0.587257075 x = 0.587257075 Simplifying x = 0.587257075

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.662742925, 0.587257075}

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