x^2+1.5x-1200=0

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Solution for x^2+1.5x-1200=0 equation:


Simplifying
x2 + 1.5x + -1200 = 0

Reorder the terms:
-1200 + 1.5x + x2 = 0

Solving
-1200 + 1.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '1200' to each side of the equation.
-1200 + 1.5x + 1200 + x2 = 0 + 1200

Reorder the terms:
-1200 + 1200 + 1.5x + x2 = 0 + 1200

Combine like terms: -1200 + 1200 = 0
0 + 1.5x + x2 = 0 + 1200
1.5x + x2 = 0 + 1200

Combine like terms: 0 + 1200 = 1200
1.5x + x2 = 1200

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = 1200 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 1200 + 0.5625

Combine like terms: 1200 + 0.5625 = 1200.5625
0.5625 + 1.5x + x2 = 1200.5625

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 1200.5625

Calculate the square root of the right side: 34.649134188

Break this problem into two subproblems by setting 
(x + 0.75) equal to 34.649134188 and -34.649134188.

Subproblem 1

x + 0.75 = 34.649134188 Simplifying x + 0.75 = 34.649134188 Reorder the terms: 0.75 + x = 34.649134188 Solving 0.75 + x = 34.649134188 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 34.649134188 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 34.649134188 + -0.75 x = 34.649134188 + -0.75 Combine like terms: 34.649134188 + -0.75 = 33.899134188 x = 33.899134188 Simplifying x = 33.899134188

Subproblem 2

x + 0.75 = -34.649134188 Simplifying x + 0.75 = -34.649134188 Reorder the terms: 0.75 + x = -34.649134188 Solving 0.75 + x = -34.649134188 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -34.649134188 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -34.649134188 + -0.75 x = -34.649134188 + -0.75 Combine like terms: -34.649134188 + -0.75 = -35.399134188 x = -35.399134188 Simplifying x = -35.399134188

Solution

The solution to the problem is based on the solutions from the subproblems. x = {33.899134188, -35.399134188}

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