x^2-3x-190=0

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Solution for x^2-3x-190=0 equation:


Simplifying
x2 + -3x + -190 = 0

Reorder the terms:
-190 + -3x + x2 = 0

Solving
-190 + -3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '190' to each side of the equation.
-190 + -3x + 190 + x2 = 0 + 190

Reorder the terms:
-190 + 190 + -3x + x2 = 0 + 190

Combine like terms: -190 + 190 = 0
0 + -3x + x2 = 0 + 190
-3x + x2 = 0 + 190

Combine like terms: 0 + 190 = 190
-3x + x2 = 190

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 190 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 190 + 2.25

Combine like terms: 190 + 2.25 = 192.25
2.25 + -3x + x2 = 192.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 192.25

Calculate the square root of the right side: 13.865424624

Break this problem into two subproblems by setting 
(x + -1.5) equal to 13.865424624 and -13.865424624.

Subproblem 1

x + -1.5 = 13.865424624 Simplifying x + -1.5 = 13.865424624 Reorder the terms: -1.5 + x = 13.865424624 Solving -1.5 + x = 13.865424624 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 13.865424624 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 13.865424624 + 1.5 x = 13.865424624 + 1.5 Combine like terms: 13.865424624 + 1.5 = 15.365424624 x = 15.365424624 Simplifying x = 15.365424624

Subproblem 2

x + -1.5 = -13.865424624 Simplifying x + -1.5 = -13.865424624 Reorder the terms: -1.5 + x = -13.865424624 Solving -1.5 + x = -13.865424624 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -13.865424624 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -13.865424624 + 1.5 x = -13.865424624 + 1.5 Combine like terms: -13.865424624 + 1.5 = -12.365424624 x = -12.365424624 Simplifying x = -12.365424624

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.365424624, -12.365424624}

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