x=16x^2-44x+18

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Solution for x=16x^2-44x+18 equation:


Simplifying
x = 16x2 + -44x + 18

Reorder the terms:
x = 18 + -44x + 16x2

Solving
x = 18 + -44x + 16x2

Solving for variable 'x'.

Reorder the terms:
-18 + x + 44x + -16x2 = 18 + -44x + 16x2 + -18 + 44x + -16x2

Combine like terms: x + 44x = 45x
-18 + 45x + -16x2 = 18 + -44x + 16x2 + -18 + 44x + -16x2

Reorder the terms:
-18 + 45x + -16x2 = 18 + -18 + -44x + 44x + 16x2 + -16x2

Combine like terms: 18 + -18 = 0
-18 + 45x + -16x2 = 0 + -44x + 44x + 16x2 + -16x2
-18 + 45x + -16x2 = -44x + 44x + 16x2 + -16x2

Combine like terms: -44x + 44x = 0
-18 + 45x + -16x2 = 0 + 16x2 + -16x2
-18 + 45x + -16x2 = 16x2 + -16x2

Combine like terms: 16x2 + -16x2 = 0
-18 + 45x + -16x2 = 0

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
1.125 + -2.8125x + x2 = 0

Move the constant term to the right:

Add '-1.125' to each side of the equation.
1.125 + -2.8125x + -1.125 + x2 = 0 + -1.125

Reorder the terms:
1.125 + -1.125 + -2.8125x + x2 = 0 + -1.125

Combine like terms: 1.125 + -1.125 = 0.000
0.000 + -2.8125x + x2 = 0 + -1.125
-2.8125x + x2 = 0 + -1.125

Combine like terms: 0 + -1.125 = -1.125
-2.8125x + x2 = -1.125

The x term is -2.8125x.  Take half its coefficient (-1.40625).
Square it (1.977539063) and add it to both sides.

Add '1.977539063' to each side of the equation.
-2.8125x + 1.977539063 + x2 = -1.125 + 1.977539063

Reorder the terms:
1.977539063 + -2.8125x + x2 = -1.125 + 1.977539063

Combine like terms: -1.125 + 1.977539063 = 0.852539063
1.977539063 + -2.8125x + x2 = 0.852539063

Factor a perfect square on the left side:
(x + -1.40625)(x + -1.40625) = 0.852539063

Calculate the square root of the right side: 0.923330419

Break this problem into two subproblems by setting 
(x + -1.40625) equal to 0.923330419 and -0.923330419.

Subproblem 1

x + -1.40625 = 0.923330419 Simplifying x + -1.40625 = 0.923330419 Reorder the terms: -1.40625 + x = 0.923330419 Solving -1.40625 + x = 0.923330419 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = 0.923330419 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = 0.923330419 + 1.40625 x = 0.923330419 + 1.40625 Combine like terms: 0.923330419 + 1.40625 = 2.329580419 x = 2.329580419 Simplifying x = 2.329580419

Subproblem 2

x + -1.40625 = -0.923330419 Simplifying x + -1.40625 = -0.923330419 Reorder the terms: -1.40625 + x = -0.923330419 Solving -1.40625 + x = -0.923330419 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = -0.923330419 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = -0.923330419 + 1.40625 x = -0.923330419 + 1.40625 Combine like terms: -0.923330419 + 1.40625 = 0.482919581 x = 0.482919581 Simplifying x = 0.482919581

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.329580419, 0.482919581}

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