5x^2-90x+229=0

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Solution for 5x^2-90x+229=0 equation:


Simplifying
5x2 + -90x + 229 = 0

Reorder the terms:
229 + -90x + 5x2 = 0

Solving
229 + -90x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
45.8 + -18x + x2 = 0

Move the constant term to the right:

Add '-45.8' to each side of the equation.
45.8 + -18x + -45.8 + x2 = 0 + -45.8

Reorder the terms:
45.8 + -45.8 + -18x + x2 = 0 + -45.8

Combine like terms: 45.8 + -45.8 = 0.0
0.0 + -18x + x2 = 0 + -45.8
-18x + x2 = 0 + -45.8

Combine like terms: 0 + -45.8 = -45.8
-18x + x2 = -45.8

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = -45.8 + 81

Reorder the terms:
81 + -18x + x2 = -45.8 + 81

Combine like terms: -45.8 + 81 = 35.2
81 + -18x + x2 = 35.2

Factor a perfect square on the left side:
(x + -9)(x + -9) = 35.2

Calculate the square root of the right side: 5.93295879

Break this problem into two subproblems by setting 
(x + -9) equal to 5.93295879 and -5.93295879.

Subproblem 1

x + -9 = 5.93295879 Simplifying x + -9 = 5.93295879 Reorder the terms: -9 + x = 5.93295879 Solving -9 + x = 5.93295879 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 5.93295879 + 9 Combine like terms: -9 + 9 = 0 0 + x = 5.93295879 + 9 x = 5.93295879 + 9 Combine like terms: 5.93295879 + 9 = 14.93295879 x = 14.93295879 Simplifying x = 14.93295879

Subproblem 2

x + -9 = -5.93295879 Simplifying x + -9 = -5.93295879 Reorder the terms: -9 + x = -5.93295879 Solving -9 + x = -5.93295879 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -5.93295879 + 9 Combine like terms: -9 + 9 = 0 0 + x = -5.93295879 + 9 x = -5.93295879 + 9 Combine like terms: -5.93295879 + 9 = 3.06704121 x = 3.06704121 Simplifying x = 3.06704121

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.93295879, 3.06704121}

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