.03x+.0001x^2=2.2

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Solution for .03x+.0001x^2=2.2 equation:


Simplifying
0.03x + 0.0001x2 = 2.2

Solving
0.03x + 0.0001x2 = 2.2

Solving for variable 'x'.

Reorder the terms:
-2.2 + 0.03x + 0.0001x2 = 2.2 + -2.2

Combine like terms: 2.2 + -2.2 = 0.0
-2.2 + 0.03x + 0.0001x2 = 0.0

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

Divide each side by '0.0001'.
-22000 + 300x + x2 = 0

Move the constant term to the right:

Add '22000' to each side of the equation.
-22000 + 300x + 22000 + x2 = 0 + 22000

Reorder the terms:
-22000 + 22000 + 300x + x2 = 0 + 22000

Combine like terms: -22000 + 22000 = 0
0 + 300x + x2 = 0 + 22000
300x + x2 = 0 + 22000

Combine like terms: 0 + 22000 = 22000
300x + x2 = 22000

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 = 22000 + 22500

Reorder the terms:
22500 + 300x + x2 = 22000 + 22500

Combine like terms: 22000 + 22500 = 44500
22500 + 300x + x2 = 44500

Factor a perfect square on the left side:
(x + 150)(x + 150) = 44500

Calculate the square root of the right side: 210.950231097

Break this problem into two subproblems by setting 
(x + 150) equal to 210.950231097 and -210.950231097.

Subproblem 1

x + 150 = 210.950231097 Simplifying x + 150 = 210.950231097 Reorder the terms: 150 + x = 210.950231097 Solving 150 + x = 210.950231097 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 = 210.950231097 + -150 Combine like terms: 150 + -150 = 0 0 + x = 210.950231097 + -150 x = 210.950231097 + -150 Combine like terms: 210.950231097 + -150 = 60.950231097 x = 60.950231097 Simplifying x = 60.950231097

Subproblem 2

x + 150 = -210.950231097 Simplifying x + 150 = -210.950231097 Reorder the terms: 150 + x = -210.950231097 Solving 150 + x = -210.950231097 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 = -210.950231097 + -150 Combine like terms: 150 + -150 = 0 0 + x = -210.950231097 + -150 x = -210.950231097 + -150 Combine like terms: -210.950231097 + -150 = -360.950231097 x = -360.950231097 Simplifying x = -360.950231097

Solution

The solution to the problem is based on the solutions from the subproblems. x = {60.950231097, -360.950231097}

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