1000000=-x^2+3000x

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Solution for 1000000=-x^2+3000x equation:


Simplifying
1000000 = -1x2 + 3000x

Reorder the terms:
1000000 = 3000x + -1x2

Solving
1000000 = 3000x + -1x2

Solving for variable 'x'.

Reorder the terms:
1000000 + -3000x + x2 = 3000x + -3000x + -1x2 + x2

Combine like terms: 3000x + -3000x = 0
1000000 + -3000x + x2 = 0 + -1x2 + x2
1000000 + -3000x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
1000000 + -3000x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-1000000' to each side of the equation.
1000000 + -3000x + -1000000 + x2 = 0 + -1000000

Reorder the terms:
1000000 + -1000000 + -3000x + x2 = 0 + -1000000

Combine like terms: 1000000 + -1000000 = 0
0 + -3000x + x2 = 0 + -1000000
-3000x + x2 = 0 + -1000000

Combine like terms: 0 + -1000000 = -1000000
-3000x + x2 = -1000000

The x term is -3000x.  Take half its coefficient (-1500).
Square it (2250000) and add it to both sides.

Add '2250000' to each side of the equation.
-3000x + 2250000 + x2 = -1000000 + 2250000

Reorder the terms:
2250000 + -3000x + x2 = -1000000 + 2250000

Combine like terms: -1000000 + 2250000 = 1250000
2250000 + -3000x + x2 = 1250000

Factor a perfect square on the left side:
(x + -1500)(x + -1500) = 1250000

Calculate the square root of the right side: 1118.03398875

Break this problem into two subproblems by setting 
(x + -1500) equal to 1118.03398875 and -1118.03398875.

Subproblem 1

x + -1500 = 1118.03398875 Simplifying x + -1500 = 1118.03398875 Reorder the terms: -1500 + x = 1118.03398875 Solving -1500 + x = 1118.03398875 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1500' to each side of the equation. -1500 + 1500 + x = 1118.03398875 + 1500 Combine like terms: -1500 + 1500 = 0 0 + x = 1118.03398875 + 1500 x = 1118.03398875 + 1500 Combine like terms: 1118.03398875 + 1500 = 2618.03398875 x = 2618.03398875 Simplifying x = 2618.03398875

Subproblem 2

x + -1500 = -1118.03398875 Simplifying x + -1500 = -1118.03398875 Reorder the terms: -1500 + x = -1118.03398875 Solving -1500 + x = -1118.03398875 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1500' to each side of the equation. -1500 + 1500 + x = -1118.03398875 + 1500 Combine like terms: -1500 + 1500 = 0 0 + x = -1118.03398875 + 1500 x = -1118.03398875 + 1500 Combine like terms: -1118.03398875 + 1500 = 381.96601125 x = 381.96601125 Simplifying x = 381.96601125

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2618.03398875, 381.96601125}

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