9x^2-94x+225=0

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Solution for 9x^2-94x+225=0 equation:


Simplifying
9x2 + -94x + 225 = 0

Reorder the terms:
225 + -94x + 9x2 = 0

Solving
225 + -94x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
25 + -10.44444444x + x2 = 0

Move the constant term to the right:

Add '-25' to each side of the equation.
25 + -10.44444444x + -25 + x2 = 0 + -25

Reorder the terms:
25 + -25 + -10.44444444x + x2 = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -10.44444444x + x2 = 0 + -25
-10.44444444x + x2 = 0 + -25

Combine like terms: 0 + -25 = -25
-10.44444444x + x2 = -25

The x term is -10.44444444x.  Take half its coefficient (-5.22222222).
Square it (27.27160492) and add it to both sides.

Add '27.27160492' to each side of the equation.
-10.44444444x + 27.27160492 + x2 = -25 + 27.27160492

Reorder the terms:
27.27160492 + -10.44444444x + x2 = -25 + 27.27160492

Combine like terms: -25 + 27.27160492 = 2.27160492
27.27160492 + -10.44444444x + x2 = 2.27160492

Factor a perfect square on the left side:
(x + -5.22222222)(x + -5.22222222) = 2.27160492

Calculate the square root of the right side: 1.507184435

Break this problem into two subproblems by setting 
(x + -5.22222222) equal to 1.507184435 and -1.507184435.

Subproblem 1

x + -5.22222222 = 1.507184435 Simplifying x + -5.22222222 = 1.507184435 Reorder the terms: -5.22222222 + x = 1.507184435 Solving -5.22222222 + x = 1.507184435 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.22222222' to each side of the equation. -5.22222222 + 5.22222222 + x = 1.507184435 + 5.22222222 Combine like terms: -5.22222222 + 5.22222222 = 0.00000000 0.00000000 + x = 1.507184435 + 5.22222222 x = 1.507184435 + 5.22222222 Combine like terms: 1.507184435 + 5.22222222 = 6.729406655 x = 6.729406655 Simplifying x = 6.729406655

Subproblem 2

x + -5.22222222 = -1.507184435 Simplifying x + -5.22222222 = -1.507184435 Reorder the terms: -5.22222222 + x = -1.507184435 Solving -5.22222222 + x = -1.507184435 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.22222222' to each side of the equation. -5.22222222 + 5.22222222 + x = -1.507184435 + 5.22222222 Combine like terms: -5.22222222 + 5.22222222 = 0.00000000 0.00000000 + x = -1.507184435 + 5.22222222 x = -1.507184435 + 5.22222222 Combine like terms: -1.507184435 + 5.22222222 = 3.715037785 x = 3.715037785 Simplifying x = 3.715037785

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.729406655, 3.715037785}

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