0=-1.225x^2+1.73x+1

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Solution for 0=-1.225x^2+1.73x+1 equation:


Simplifying
0 = -1.225x2 + 1.73x + 1

Reorder the terms:
0 = 1 + 1.73x + -1.225x2

Solving
0 = 1 + 1.73x + -1.225x2

Solving for variable 'x'.

Combine like terms: 0 + -1 = -1
-1 + -1.73x + 1.225x2 = 1 + 1.73x + -1.225x2 + -1 + -1.73x + 1.225x2

Reorder the terms:
-1 + -1.73x + 1.225x2 = 1 + -1 + 1.73x + -1.73x + -1.225x2 + 1.225x2

Combine like terms: 1 + -1 = 0
-1 + -1.73x + 1.225x2 = 0 + 1.73x + -1.73x + -1.225x2 + 1.225x2
-1 + -1.73x + 1.225x2 = 1.73x + -1.73x + -1.225x2 + 1.225x2

Combine like terms: 1.73x + -1.73x = 0.00
-1 + -1.73x + 1.225x2 = 0.00 + -1.225x2 + 1.225x2
-1 + -1.73x + 1.225x2 = -1.225x2 + 1.225x2

Combine like terms: -1.225x2 + 1.225x2 = 0.000
-1 + -1.73x + 1.225x2 = 0.000

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

Divide each side by '1.225'.
-0.8163265306 + -1.412244898x + x2 = 0

Move the constant term to the right:

Add '0.8163265306' to each side of the equation.
-0.8163265306 + -1.412244898x + 0.8163265306 + x2 = 0 + 0.8163265306

Reorder the terms:
-0.8163265306 + 0.8163265306 + -1.412244898x + x2 = 0 + 0.8163265306

Combine like terms: -0.8163265306 + 0.8163265306 = 0.0000000000
0.0000000000 + -1.412244898x + x2 = 0 + 0.8163265306
-1.412244898x + x2 = 0 + 0.8163265306

Combine like terms: 0 + 0.8163265306 = 0.8163265306
-1.412244898x + x2 = 0.8163265306

The x term is -1.412244898x.  Take half its coefficient (-0.706122449).
Square it (0.4986089130) and add it to both sides.

Add '0.4986089130' to each side of the equation.
-1.412244898x + 0.4986089130 + x2 = 0.8163265306 + 0.4986089130

Reorder the terms:
0.4986089130 + -1.412244898x + x2 = 0.8163265306 + 0.4986089130

Combine like terms: 0.8163265306 + 0.4986089130 = 1.3149354436
0.4986089130 + -1.412244898x + x2 = 1.3149354436

Factor a perfect square on the left side:
(x + -0.706122449)(x + -0.706122449) = 1.3149354436

Calculate the square root of the right side: 1.146706346

Break this problem into two subproblems by setting 
(x + -0.706122449) equal to 1.146706346 and -1.146706346.

Subproblem 1

x + -0.706122449 = 1.146706346 Simplifying x + -0.706122449 = 1.146706346 Reorder the terms: -0.706122449 + x = 1.146706346 Solving -0.706122449 + x = 1.146706346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.706122449' to each side of the equation. -0.706122449 + 0.706122449 + x = 1.146706346 + 0.706122449 Combine like terms: -0.706122449 + 0.706122449 = 0.000000000 0.000000000 + x = 1.146706346 + 0.706122449 x = 1.146706346 + 0.706122449 Combine like terms: 1.146706346 + 0.706122449 = 1.852828795 x = 1.852828795 Simplifying x = 1.852828795

Subproblem 2

x + -0.706122449 = -1.146706346 Simplifying x + -0.706122449 = -1.146706346 Reorder the terms: -0.706122449 + x = -1.146706346 Solving -0.706122449 + x = -1.146706346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.706122449' to each side of the equation. -0.706122449 + 0.706122449 + x = -1.146706346 + 0.706122449 Combine like terms: -0.706122449 + 0.706122449 = 0.000000000 0.000000000 + x = -1.146706346 + 0.706122449 x = -1.146706346 + 0.706122449 Combine like terms: -1.146706346 + 0.706122449 = -0.440583897 x = -0.440583897 Simplifying x = -0.440583897

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.852828795, -0.440583897}

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