3x^2-22x+36=0

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Solution for 3x^2-22x+36=0 equation:


Simplifying
3x2 + -22x + 36 = 0

Reorder the terms:
36 + -22x + 3x2 = 0

Solving
36 + -22x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
12 + -7.333333333x + x2 = 0

Move the constant term to the right:

Add '-12' to each side of the equation.
12 + -7.333333333x + -12 + x2 = 0 + -12

Reorder the terms:
12 + -12 + -7.333333333x + x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -7.333333333x + x2 = 0 + -12
-7.333333333x + x2 = 0 + -12

Combine like terms: 0 + -12 = -12
-7.333333333x + x2 = -12

The x term is -7.333333333x.  Take half its coefficient (-3.666666667).
Square it (13.44444445) and add it to both sides.

Add '13.44444445' to each side of the equation.
-7.333333333x + 13.44444445 + x2 = -12 + 13.44444445

Reorder the terms:
13.44444445 + -7.333333333x + x2 = -12 + 13.44444445

Combine like terms: -12 + 13.44444445 = 1.44444445
13.44444445 + -7.333333333x + x2 = 1.44444445

Factor a perfect square on the left side:
(x + -3.666666667)(x + -3.666666667) = 1.44444445

Calculate the square root of the right side: 1.201850427

Break this problem into two subproblems by setting 
(x + -3.666666667) equal to 1.201850427 and -1.201850427.

Subproblem 1

x + -3.666666667 = 1.201850427 Simplifying x + -3.666666667 = 1.201850427 Reorder the terms: -3.666666667 + x = 1.201850427 Solving -3.666666667 + x = 1.201850427 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.666666667' to each side of the equation. -3.666666667 + 3.666666667 + x = 1.201850427 + 3.666666667 Combine like terms: -3.666666667 + 3.666666667 = 0.000000000 0.000000000 + x = 1.201850427 + 3.666666667 x = 1.201850427 + 3.666666667 Combine like terms: 1.201850427 + 3.666666667 = 4.868517094 x = 4.868517094 Simplifying x = 4.868517094

Subproblem 2

x + -3.666666667 = -1.201850427 Simplifying x + -3.666666667 = -1.201850427 Reorder the terms: -3.666666667 + x = -1.201850427 Solving -3.666666667 + x = -1.201850427 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.666666667' to each side of the equation. -3.666666667 + 3.666666667 + x = -1.201850427 + 3.666666667 Combine like terms: -3.666666667 + 3.666666667 = 0.000000000 0.000000000 + x = -1.201850427 + 3.666666667 x = -1.201850427 + 3.666666667 Combine like terms: -1.201850427 + 3.666666667 = 2.46481624 x = 2.46481624 Simplifying x = 2.46481624

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.868517094, 2.46481624}

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