x^2-45x-300=0

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Solution for x^2-45x-300=0 equation:


Simplifying
x2 + -45x + -300 = 0

Reorder the terms:
-300 + -45x + x2 = 0

Solving
-300 + -45x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '300' to each side of the equation.
-300 + -45x + 300 + x2 = 0 + 300

Reorder the terms:
-300 + 300 + -45x + x2 = 0 + 300

Combine like terms: -300 + 300 = 0
0 + -45x + x2 = 0 + 300
-45x + x2 = 0 + 300

Combine like terms: 0 + 300 = 300
-45x + x2 = 300

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 = 300 + 506.25

Reorder the terms:
506.25 + -45x + x2 = 300 + 506.25

Combine like terms: 300 + 506.25 = 806.25
506.25 + -45x + x2 = 806.25

Factor a perfect square on the left side:
(x + -22.5)(x + -22.5) = 806.25

Calculate the square root of the right side: 28.394541729

Break this problem into two subproblems by setting 
(x + -22.5) equal to 28.394541729 and -28.394541729.

Subproblem 1

x + -22.5 = 28.394541729 Simplifying x + -22.5 = 28.394541729 Reorder the terms: -22.5 + x = 28.394541729 Solving -22.5 + x = 28.394541729 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 = 28.394541729 + 22.5 Combine like terms: -22.5 + 22.5 = 0.0 0.0 + x = 28.394541729 + 22.5 x = 28.394541729 + 22.5 Combine like terms: 28.394541729 + 22.5 = 50.894541729 x = 50.894541729 Simplifying x = 50.894541729

Subproblem 2

x + -22.5 = -28.394541729 Simplifying x + -22.5 = -28.394541729 Reorder the terms: -22.5 + x = -28.394541729 Solving -22.5 + x = -28.394541729 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 = -28.394541729 + 22.5 Combine like terms: -22.5 + 22.5 = 0.0 0.0 + x = -28.394541729 + 22.5 x = -28.394541729 + 22.5 Combine like terms: -28.394541729 + 22.5 = -5.894541729 x = -5.894541729 Simplifying x = -5.894541729

Solution

The solution to the problem is based on the solutions from the subproblems. x = {50.894541729, -5.894541729}

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