=-0.12x^2+12x+720

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Solution for =-0.12x^2+12x+720 equation:


Simplifying
0 = -0.12x2 + 12x + 720

Reorder the terms:
0 = 720 + 12x + -0.12x2

Solving
0 = 720 + 12x + -0.12x2

Solving for variable 'x'.

Combine like terms: 0 + -720 = -720
-720 + -12x + 0.12x2 = 720 + 12x + -0.12x2 + -720 + -12x + 0.12x2

Reorder the terms:
-720 + -12x + 0.12x2 = 720 + -720 + 12x + -12x + -0.12x2 + 0.12x2

Combine like terms: 720 + -720 = 0
-720 + -12x + 0.12x2 = 0 + 12x + -12x + -0.12x2 + 0.12x2
-720 + -12x + 0.12x2 = 12x + -12x + -0.12x2 + 0.12x2

Combine like terms: 12x + -12x = 0
-720 + -12x + 0.12x2 = 0 + -0.12x2 + 0.12x2
-720 + -12x + 0.12x2 = -0.12x2 + 0.12x2

Combine like terms: -0.12x2 + 0.12x2 = 0.00
-720 + -12x + 0.12x2 = 0.00

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

Divide each side by '0.12'.
-6000 + -100x + x2 = 0

Move the constant term to the right:

Add '6000' to each side of the equation.
-6000 + -100x + 6000 + x2 = 0 + 6000

Reorder the terms:
-6000 + 6000 + -100x + x2 = 0 + 6000

Combine like terms: -6000 + 6000 = 0
0 + -100x + x2 = 0 + 6000
-100x + x2 = 0 + 6000

Combine like terms: 0 + 6000 = 6000
-100x + x2 = 6000

The x term is -100x.  Take half its coefficient (-50).
Square it (2500) and add it to both sides.

Add '2500' to each side of the equation.
-100x + 2500 + x2 = 6000 + 2500

Reorder the terms:
2500 + -100x + x2 = 6000 + 2500

Combine like terms: 6000 + 2500 = 8500
2500 + -100x + x2 = 8500

Factor a perfect square on the left side:
(x + -50)(x + -50) = 8500

Calculate the square root of the right side: 92.195444573

Break this problem into two subproblems by setting 
(x + -50) equal to 92.195444573 and -92.195444573.

Subproblem 1

x + -50 = 92.195444573 Simplifying x + -50 = 92.195444573 Reorder the terms: -50 + x = 92.195444573 Solving -50 + x = 92.195444573 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '50' to each side of the equation. -50 + 50 + x = 92.195444573 + 50 Combine like terms: -50 + 50 = 0 0 + x = 92.195444573 + 50 x = 92.195444573 + 50 Combine like terms: 92.195444573 + 50 = 142.195444573 x = 142.195444573 Simplifying x = 142.195444573

Subproblem 2

x + -50 = -92.195444573 Simplifying x + -50 = -92.195444573 Reorder the terms: -50 + x = -92.195444573 Solving -50 + x = -92.195444573 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '50' to each side of the equation. -50 + 50 + x = -92.195444573 + 50 Combine like terms: -50 + 50 = 0 0 + x = -92.195444573 + 50 x = -92.195444573 + 50 Combine like terms: -92.195444573 + 50 = -42.195444573 x = -42.195444573 Simplifying x = -42.195444573

Solution

The solution to the problem is based on the solutions from the subproblems. x = {142.195444573, -42.195444573}

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