150x^2=0.3-x

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Solution for 150x^2=0.3-x equation:


Simplifying
150x2 = 0.3 + -1x

Solving
150x2 = 0.3 + -1x

Solving for variable 'x'.

Reorder the terms:
-0.3 + x + 150x2 = 0.3 + -1x + -0.3 + x

Reorder the terms:
-0.3 + x + 150x2 = 0.3 + -0.3 + -1x + x

Combine like terms: 0.3 + -0.3 = 0.0
-0.3 + x + 150x2 = 0.0 + -1x + x
-0.3 + x + 150x2 = -1x + x

Combine like terms: -1x + x = 0
-0.3 + x + 150x2 = 0

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

Divide each side by '150'.
-0.002 + 0.006666666667x + x2 = 0

Move the constant term to the right:

Add '0.002' to each side of the equation.
-0.002 + 0.006666666667x + 0.002 + x2 = 0 + 0.002

Reorder the terms:
-0.002 + 0.002 + 0.006666666667x + x2 = 0 + 0.002

Combine like terms: -0.002 + 0.002 = 0.000
0.000 + 0.006666666667x + x2 = 0 + 0.002
0.006666666667x + x2 = 0 + 0.002

Combine like terms: 0 + 0.002 = 0.002
0.006666666667x + x2 = 0.002

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.006666666667x + 0.25 + x2 = 0.002 + 0.25

Reorder the terms:
0.25 + 0.006666666667x + x2 = 0.002 + 0.25

Combine like terms: 0.002 + 0.25 = 0.252
0.25 + 0.006666666667x + x2 = 0.252

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.252

Calculate the square root of the right side: 0.501996016

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.501996016 and -0.501996016.

Subproblem 1

x + 0.5 = 0.501996016 Simplifying x + 0.5 = 0.501996016 Reorder the terms: 0.5 + x = 0.501996016 Solving 0.5 + x = 0.501996016 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.501996016 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.501996016 + -0.5 x = 0.501996016 + -0.5 Combine like terms: 0.501996016 + -0.5 = 0.001996016 x = 0.001996016 Simplifying x = 0.001996016

Subproblem 2

x + 0.5 = -0.501996016 Simplifying x + 0.5 = -0.501996016 Reorder the terms: 0.5 + x = -0.501996016 Solving 0.5 + x = -0.501996016 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.501996016 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.501996016 + -0.5 x = -0.501996016 + -0.5 Combine like terms: -0.501996016 + -0.5 = -1.001996016 x = -1.001996016 Simplifying x = -1.001996016

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.001996016, -1.001996016}

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