.3x-60=2.4x-0.001x^2

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Solution for .3x-60=2.4x-0.001x^2 equation:


Simplifying
0.3x + -60 = 2.4x + -0.001x2

Reorder the terms:
-60 + 0.3x = 2.4x + -0.001x2

Solving
-60 + 0.3x = 2.4x + -0.001x2

Solving for variable 'x'.

Combine like terms: 0.3x + -2.4x = -2.1x
-60 + -2.1x + 0.001x2 = 2.4x + -0.001x2 + -2.4x + 0.001x2

Reorder the terms:
-60 + -2.1x + 0.001x2 = 2.4x + -2.4x + -0.001x2 + 0.001x2

Combine like terms: 2.4x + -2.4x = 0.0
-60 + -2.1x + 0.001x2 = 0.0 + -0.001x2 + 0.001x2
-60 + -2.1x + 0.001x2 = -0.001x2 + 0.001x2

Combine like terms: -0.001x2 + 0.001x2 = 0.000
-60 + -2.1x + 0.001x2 = 0.000

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

Divide each side by '0.001'.
-60000 + -2100x + x2 = 0

Move the constant term to the right:

Add '60000' to each side of the equation.
-60000 + -2100x + 60000 + x2 = 0 + 60000

Reorder the terms:
-60000 + 60000 + -2100x + x2 = 0 + 60000

Combine like terms: -60000 + 60000 = 0
0 + -2100x + x2 = 0 + 60000
-2100x + x2 = 0 + 60000

Combine like terms: 0 + 60000 = 60000
-2100x + x2 = 60000

The x term is -2100x.  Take half its coefficient (-1050).
Square it (1102500) and add it to both sides.

Add '1102500' to each side of the equation.
-2100x + 1102500 + x2 = 60000 + 1102500

Reorder the terms:
1102500 + -2100x + x2 = 60000 + 1102500

Combine like terms: 60000 + 1102500 = 1162500
1102500 + -2100x + x2 = 1162500

Factor a perfect square on the left side:
(x + -1050)(x + -1050) = 1162500

Calculate the square root of the right side: 1078.192932642

Break this problem into two subproblems by setting 
(x + -1050) equal to 1078.192932642 and -1078.192932642.

Subproblem 1

x + -1050 = 1078.192932642 Simplifying x + -1050 = 1078.192932642 Reorder the terms: -1050 + x = 1078.192932642 Solving -1050 + x = 1078.192932642 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1050' to each side of the equation. -1050 + 1050 + x = 1078.192932642 + 1050 Combine like terms: -1050 + 1050 = 0 0 + x = 1078.192932642 + 1050 x = 1078.192932642 + 1050 Combine like terms: 1078.192932642 + 1050 = 2128.192932642 x = 2128.192932642 Simplifying x = 2128.192932642

Subproblem 2

x + -1050 = -1078.192932642 Simplifying x + -1050 = -1078.192932642 Reorder the terms: -1050 + x = -1078.192932642 Solving -1050 + x = -1078.192932642 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1050' to each side of the equation. -1050 + 1050 + x = -1078.192932642 + 1050 Combine like terms: -1050 + 1050 = 0 0 + x = -1078.192932642 + 1050 x = -1078.192932642 + 1050 Combine like terms: -1078.192932642 + 1050 = -28.192932642 x = -28.192932642 Simplifying x = -28.192932642

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2128.192932642, -28.192932642}

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