18x^2+900x-7015909=0

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Solution for 18x^2+900x-7015909=0 equation:


Simplifying
18x2 + 900x + -7015909 = 0

Reorder the terms:
-7015909 + 900x + 18x2 = 0

Solving
-7015909 + 900x + 18x2 = 0

Solving for variable 'x'.

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

Divide each side by '18'.
-389772.7222 + 50x + x2 = 0

Move the constant term to the right:

Add '389772.7222' to each side of the equation.
-389772.7222 + 50x + 389772.7222 + x2 = 0 + 389772.7222

Reorder the terms:
-389772.7222 + 389772.7222 + 50x + x2 = 0 + 389772.7222

Combine like terms: -389772.7222 + 389772.7222 = 0.0000
0.0000 + 50x + x2 = 0 + 389772.7222
50x + x2 = 0 + 389772.7222

Combine like terms: 0 + 389772.7222 = 389772.7222
50x + x2 = 389772.7222

The x term is 50x.  Take half its coefficient (25).
Square it (625) and add it to both sides.

Add '625' to each side of the equation.
50x + 625 + x2 = 389772.7222 + 625

Reorder the terms:
625 + 50x + x2 = 389772.7222 + 625

Combine like terms: 389772.7222 + 625 = 390397.7222
625 + 50x + x2 = 390397.7222

Factor a perfect square on the left side:
(x + 25)(x + 25) = 390397.7222

Calculate the square root of the right side: 624.818151305

Break this problem into two subproblems by setting 
(x + 25) equal to 624.818151305 and -624.818151305.

Subproblem 1

x + 25 = 624.818151305 Simplifying x + 25 = 624.818151305 Reorder the terms: 25 + x = 624.818151305 Solving 25 + x = 624.818151305 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + x = 624.818151305 + -25 Combine like terms: 25 + -25 = 0 0 + x = 624.818151305 + -25 x = 624.818151305 + -25 Combine like terms: 624.818151305 + -25 = 599.818151305 x = 599.818151305 Simplifying x = 599.818151305

Subproblem 2

x + 25 = -624.818151305 Simplifying x + 25 = -624.818151305 Reorder the terms: 25 + x = -624.818151305 Solving 25 + x = -624.818151305 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + x = -624.818151305 + -25 Combine like terms: 25 + -25 = 0 0 + x = -624.818151305 + -25 x = -624.818151305 + -25 Combine like terms: -624.818151305 + -25 = -649.818151305 x = -649.818151305 Simplifying x = -649.818151305

Solution

The solution to the problem is based on the solutions from the subproblems. x = {599.818151305, -649.818151305}

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