2.3-.03x-.0001x^2=0

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Solution for 2.3-.03x-.0001x^2=0 equation:


Simplifying
2.3 + -0.03x + -0.0001x2 = 0

Solving
2.3 + -0.03x + -0.0001x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.0001 the coefficient of the squared term: 

Divide each side by '-0.0001'.
-23000 + 300x + x2 = 0

Move the constant term to the right:

Add '23000' to each side of the equation.
-23000 + 300x + 23000 + x2 = 0 + 23000

Reorder the terms:
-23000 + 23000 + 300x + x2 = 0 + 23000

Combine like terms: -23000 + 23000 = 0
0 + 300x + x2 = 0 + 23000
300x + x2 = 0 + 23000

Combine like terms: 0 + 23000 = 23000
300x + x2 = 23000

The x term is 300x.  Take half its coefficient (150).
Square it (22500) and add it to both sides.

Add '22500' to each side of the equation.
300x + 22500 + x2 = 23000 + 22500

Reorder the terms:
22500 + 300x + x2 = 23000 + 22500

Combine like terms: 23000 + 22500 = 45500
22500 + 300x + x2 = 45500

Factor a perfect square on the left side:
(x + 150)(x + 150) = 45500

Calculate the square root of the right side: 213.307290077

Break this problem into two subproblems by setting 
(x + 150) equal to 213.307290077 and -213.307290077.

Subproblem 1

x + 150 = 213.307290077 Simplifying x + 150 = 213.307290077 Reorder the terms: 150 + x = 213.307290077 Solving 150 + x = 213.307290077 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-150' to each side of the equation. 150 + -150 + x = 213.307290077 + -150 Combine like terms: 150 + -150 = 0 0 + x = 213.307290077 + -150 x = 213.307290077 + -150 Combine like terms: 213.307290077 + -150 = 63.307290077 x = 63.307290077 Simplifying x = 63.307290077

Subproblem 2

x + 150 = -213.307290077 Simplifying x + 150 = -213.307290077 Reorder the terms: 150 + x = -213.307290077 Solving 150 + x = -213.307290077 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-150' to each side of the equation. 150 + -150 + x = -213.307290077 + -150 Combine like terms: 150 + -150 = 0 0 + x = -213.307290077 + -150 x = -213.307290077 + -150 Combine like terms: -213.307290077 + -150 = -363.307290077 x = -363.307290077 Simplifying x = -363.307290077

Solution

The solution to the problem is based on the solutions from the subproblems. x = {63.307290077, -363.307290077}

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