x^2-45x+15=0

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Solution for x^2-45x+15=0 equation:


Simplifying
x2 + -45x + 15 = 0

Reorder the terms:
15 + -45x + x2 = 0

Solving
15 + -45x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + -45x + -15 + x2 = 0 + -15

Reorder the terms:
15 + -15 + -45x + x2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -45x + x2 = 0 + -15
-45x + x2 = 0 + -15

Combine like terms: 0 + -15 = -15
-45x + x2 = -15

The x term is -45x.  Take half its coefficient (-22.5).
Square it (506.25) and add it to both sides.

Add '506.25' to each side of the equation.
-45x + 506.25 + x2 = -15 + 506.25

Reorder the terms:
506.25 + -45x + x2 = -15 + 506.25

Combine like terms: -15 + 506.25 = 491.25
506.25 + -45x + x2 = 491.25

Factor a perfect square on the left side:
(x + -22.5)(x + -22.5) = 491.25

Calculate the square root of the right side: 22.164160259

Break this problem into two subproblems by setting 
(x + -22.5) equal to 22.164160259 and -22.164160259.

Subproblem 1

x + -22.5 = 22.164160259 Simplifying x + -22.5 = 22.164160259 Reorder the terms: -22.5 + x = 22.164160259 Solving -22.5 + x = 22.164160259 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '22.5' to each side of the equation. -22.5 + 22.5 + x = 22.164160259 + 22.5 Combine like terms: -22.5 + 22.5 = 0.0 0.0 + x = 22.164160259 + 22.5 x = 22.164160259 + 22.5 Combine like terms: 22.164160259 + 22.5 = 44.664160259 x = 44.664160259 Simplifying x = 44.664160259

Subproblem 2

x + -22.5 = -22.164160259 Simplifying x + -22.5 = -22.164160259 Reorder the terms: -22.5 + x = -22.164160259 Solving -22.5 + x = -22.164160259 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '22.5' to each side of the equation. -22.5 + 22.5 + x = -22.164160259 + 22.5 Combine like terms: -22.5 + 22.5 = 0.0 0.0 + x = -22.164160259 + 22.5 x = -22.164160259 + 22.5 Combine like terms: -22.164160259 + 22.5 = 0.335839741 x = 0.335839741 Simplifying x = 0.335839741

Solution

The solution to the problem is based on the solutions from the subproblems. x = {44.664160259, 0.335839741}

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