.03x^2-4x+200=180

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Solution for .03x^2-4x+200=180 equation:


Simplifying
0.03x2 + -4x + 200 = 180

Reorder the terms:
200 + -4x + 0.03x2 = 180

Solving
200 + -4x + 0.03x2 = 180

Solving for variable 'x'.

Reorder the terms:
200 + -180 + -4x + 0.03x2 = 180 + -180

Combine like terms: 200 + -180 = 20
20 + -4x + 0.03x2 = 180 + -180

Combine like terms: 180 + -180 = 0
20 + -4x + 0.03x2 = 0

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

Divide each side by '0.03'.
666.6666667 + -133.3333333x + x2 = 0

Move the constant term to the right:

Add '-666.6666667' to each side of the equation.
666.6666667 + -133.3333333x + -666.6666667 + x2 = 0 + -666.6666667

Reorder the terms:
666.6666667 + -666.6666667 + -133.3333333x + x2 = 0 + -666.6666667

Combine like terms: 666.6666667 + -666.6666667 = 0.0000000
0.0000000 + -133.3333333x + x2 = 0 + -666.6666667
-133.3333333x + x2 = 0 + -666.6666667

Combine like terms: 0 + -666.6666667 = -666.6666667
-133.3333333x + x2 = -666.6666667

The x term is -133.3333333x.  Take half its coefficient (-66.66666665).
Square it (4444.444442) and add it to both sides.

Add '4444.444442' to each side of the equation.
-133.3333333x + 4444.444442 + x2 = -666.6666667 + 4444.444442

Reorder the terms:
4444.444442 + -133.3333333x + x2 = -666.6666667 + 4444.444442

Combine like terms: -666.6666667 + 4444.444442 = 3777.7777753
4444.444442 + -133.3333333x + x2 = 3777.7777753

Factor a perfect square on the left side:
(x + -66.66666665)(x + -66.66666665) = 3777.7777753

Calculate the square root of the right side: 61.463629695

Break this problem into two subproblems by setting 
(x + -66.66666665) equal to 61.463629695 and -61.463629695.

Subproblem 1

x + -66.66666665 = 61.463629695 Simplifying x + -66.66666665 = 61.463629695 Reorder the terms: -66.66666665 + x = 61.463629695 Solving -66.66666665 + x = 61.463629695 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '66.66666665' to each side of the equation. -66.66666665 + 66.66666665 + x = 61.463629695 + 66.66666665 Combine like terms: -66.66666665 + 66.66666665 = 0.00000000 0.00000000 + x = 61.463629695 + 66.66666665 x = 61.463629695 + 66.66666665 Combine like terms: 61.463629695 + 66.66666665 = 128.130296345 x = 128.130296345 Simplifying x = 128.130296345

Subproblem 2

x + -66.66666665 = -61.463629695 Simplifying x + -66.66666665 = -61.463629695 Reorder the terms: -66.66666665 + x = -61.463629695 Solving -66.66666665 + x = -61.463629695 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '66.66666665' to each side of the equation. -66.66666665 + 66.66666665 + x = -61.463629695 + 66.66666665 Combine like terms: -66.66666665 + 66.66666665 = 0.00000000 0.00000000 + x = -61.463629695 + 66.66666665 x = -61.463629695 + 66.66666665 Combine like terms: -61.463629695 + 66.66666665 = 5.203036955 x = 5.203036955 Simplifying x = 5.203036955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {128.130296345, 5.203036955}

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