9x^2+480x-2000=0

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Solution for 9x^2+480x-2000=0 equation:


Simplifying
9x2 + 480x + -2000 = 0

Reorder the terms:
-2000 + 480x + 9x2 = 0

Solving
-2000 + 480x + 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'.
-222.2222222 + 53.33333333x + x2 = 0

Move the constant term to the right:

Add '222.2222222' to each side of the equation.
-222.2222222 + 53.33333333x + 222.2222222 + x2 = 0 + 222.2222222

Reorder the terms:
-222.2222222 + 222.2222222 + 53.33333333x + x2 = 0 + 222.2222222

Combine like terms: -222.2222222 + 222.2222222 = 0.0000000
0.0000000 + 53.33333333x + x2 = 0 + 222.2222222
53.33333333x + x2 = 0 + 222.2222222

Combine like terms: 0 + 222.2222222 = 222.2222222
53.33333333x + x2 = 222.2222222

The x term is 53.33333333x.  Take half its coefficient (26.66666667).
Square it (711.1111113) and add it to both sides.

Add '711.1111113' to each side of the equation.
53.33333333x + 711.1111113 + x2 = 222.2222222 + 711.1111113

Reorder the terms:
711.1111113 + 53.33333333x + x2 = 222.2222222 + 711.1111113

Combine like terms: 222.2222222 + 711.1111113 = 933.3333335
711.1111113 + 53.33333333x + x2 = 933.3333335

Factor a perfect square on the left side:
(x + 26.66666667)(x + 26.66666667) = 933.3333335

Calculate the square root of the right side: 30.550504636

Break this problem into two subproblems by setting 
(x + 26.66666667) equal to 30.550504636 and -30.550504636.

Subproblem 1

x + 26.66666667 = 30.550504636 Simplifying x + 26.66666667 = 30.550504636 Reorder the terms: 26.66666667 + x = 30.550504636 Solving 26.66666667 + x = 30.550504636 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-26.66666667' to each side of the equation. 26.66666667 + -26.66666667 + x = 30.550504636 + -26.66666667 Combine like terms: 26.66666667 + -26.66666667 = 0.00000000 0.00000000 + x = 30.550504636 + -26.66666667 x = 30.550504636 + -26.66666667 Combine like terms: 30.550504636 + -26.66666667 = 3.883837966 x = 3.883837966 Simplifying x = 3.883837966

Subproblem 2

x + 26.66666667 = -30.550504636 Simplifying x + 26.66666667 = -30.550504636 Reorder the terms: 26.66666667 + x = -30.550504636 Solving 26.66666667 + x = -30.550504636 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-26.66666667' to each side of the equation. 26.66666667 + -26.66666667 + x = -30.550504636 + -26.66666667 Combine like terms: 26.66666667 + -26.66666667 = 0.00000000 0.00000000 + x = -30.550504636 + -26.66666667 x = -30.550504636 + -26.66666667 Combine like terms: -30.550504636 + -26.66666667 = -57.217171306 x = -57.217171306 Simplifying x = -57.217171306

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.883837966, -57.217171306}

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