36x^2-111x+16=0

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Solution for 36x^2-111x+16=0 equation:


Simplifying
36x2 + -111x + 16 = 0

Reorder the terms:
16 + -111x + 36x2 = 0

Solving
16 + -111x + 36x2 = 0

Solving for variable 'x'.

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

Divide each side by '36'.
0.4444444444 + -3.083333333x + x2 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + -3.083333333x + -0.4444444444 + x2 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + -3.083333333x + x2 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + -3.083333333x + x2 = 0 + -0.4444444444
-3.083333333x + x2 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
-3.083333333x + x2 = -0.4444444444

The x term is -3.083333333x.  Take half its coefficient (-1.541666667).
Square it (2.376736112) and add it to both sides.

Add '2.376736112' to each side of the equation.
-3.083333333x + 2.376736112 + x2 = -0.4444444444 + 2.376736112

Reorder the terms:
2.376736112 + -3.083333333x + x2 = -0.4444444444 + 2.376736112

Combine like terms: -0.4444444444 + 2.376736112 = 1.9322916676
2.376736112 + -3.083333333x + x2 = 1.9322916676

Factor a perfect square on the left side:
(x + -1.541666667)(x + -1.541666667) = 1.9322916676

Calculate the square root of the right side: 1.390068943

Break this problem into two subproblems by setting 
(x + -1.541666667) equal to 1.390068943 and -1.390068943.

Subproblem 1

x + -1.541666667 = 1.390068943 Simplifying x + -1.541666667 = 1.390068943 Reorder the terms: -1.541666667 + x = 1.390068943 Solving -1.541666667 + x = 1.390068943 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.541666667' to each side of the equation. -1.541666667 + 1.541666667 + x = 1.390068943 + 1.541666667 Combine like terms: -1.541666667 + 1.541666667 = 0.000000000 0.000000000 + x = 1.390068943 + 1.541666667 x = 1.390068943 + 1.541666667 Combine like terms: 1.390068943 + 1.541666667 = 2.93173561 x = 2.93173561 Simplifying x = 2.93173561

Subproblem 2

x + -1.541666667 = -1.390068943 Simplifying x + -1.541666667 = -1.390068943 Reorder the terms: -1.541666667 + x = -1.390068943 Solving -1.541666667 + x = -1.390068943 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.541666667' to each side of the equation. -1.541666667 + 1.541666667 + x = -1.390068943 + 1.541666667 Combine like terms: -1.541666667 + 1.541666667 = 0.000000000 0.000000000 + x = -1.390068943 + 1.541666667 x = -1.390068943 + 1.541666667 Combine like terms: -1.390068943 + 1.541666667 = 0.151597724 x = 0.151597724 Simplifying x = 0.151597724

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.93173561, 0.151597724}

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