3x^2-28x+45=0

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Solution for 3x^2-28x+45=0 equation: 


Simplifying
3x2 + -28x + 45 = 0

Reorder the terms:
45 + -28x + 3x2 = 0

Solving
45 + -28x + 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'.
15 + -9.333333333x + x2 = 0

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + -9.333333333x + -15 + x2 = 0 + -15

Reorder the terms:
15 + -15 + -9.333333333x + x2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -9.333333333x + x2 = 0 + -15
-9.333333333x + x2 = 0 + -15

Combine like terms: 0 + -15 = -15
-9.333333333x + x2 = -15

The x term is -9.333333333x.  Take half its coefficient (-4.666666667).
Square it (21.77777778) and add it to both sides.

Add '21.77777778' to each side of the equation.
-9.333333333x + 21.77777778 + x2 = -15 + 21.77777778

Reorder the terms:
21.77777778 + -9.333333333x + x2 = -15 + 21.77777778

Combine like terms: -15 + 21.77777778 = 6.77777778
21.77777778 + -9.333333333x + x2 = 6.77777778

Factor a perfect square on the left side:
(x + -4.666666667)(x + -4.666666667) = 6.77777778

Calculate the square root of the right side: 2.603416559

Break this problem into two subproblems by setting 
(x + -4.666666667) equal to 2.603416559 and -2.603416559.


Subproblem 1
x + -4.666666667 = 2.603416559

Simplifying
x + -4.666666667 = 2.603416559

Reorder the terms:
-4.666666667 + x = 2.603416559

Solving
-4.666666667 + x = 2.603416559

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4.666666667' to each side of the equation.
-4.666666667 + 4.666666667 + x = 2.603416559 + 4.666666667

Combine like terms: -4.666666667 + 4.666666667 = 0.000000000
0.000000000 + x = 2.603416559 + 4.666666667
x = 2.603416559 + 4.666666667

Combine like terms: 2.603416559 + 4.666666667 = 7.270083226
x = 7.270083226

Simplifying
x = 7.270083226


Subproblem 2
x + -4.666666667 = -2.603416559

Simplifying
x + -4.666666667 = -2.603416559

Reorder the terms:
-4.666666667 + x = -2.603416559

Solving
-4.666666667 + x = -2.603416559

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4.666666667' to each side of the equation.
-4.666666667 + 4.666666667 + x = -2.603416559 + 4.666666667

Combine like terms: -4.666666667 + 4.666666667 = 0.000000000
0.000000000 + x = -2.603416559 + 4.666666667
x = -2.603416559 + 4.666666667

Combine like terms: -2.603416559 + 4.666666667 = 2.063250108
x = 2.063250108

Simplifying
x = 2.063250108


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {7.270083226, 2.063250108}

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