120x^2+.12x+.03=3-x

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Solution for 120x^2+.12x+.03=3-x equation:


Simplifying
120x2 + 0.12x + 0.03 = 3 + -1x

Reorder the terms:
0.03 + 0.12x + 120x2 = 3 + -1x

Solving
0.03 + 0.12x + 120x2 = 3 + -1x

Solving for variable 'x'.

Reorder the terms:
0.03 + -3 + 0.12x + x + 120x2 = 3 + -1x + -3 + x

Combine like terms: 0.03 + -3 = -2.97
-2.97 + 0.12x + x + 120x2 = 3 + -1x + -3 + x

Combine like terms: 0.12x + x = 1.12x
-2.97 + 1.12x + 120x2 = 3 + -1x + -3 + x

Reorder the terms:
-2.97 + 1.12x + 120x2 = 3 + -3 + -1x + x

Combine like terms: 3 + -3 = 0
-2.97 + 1.12x + 120x2 = 0 + -1x + x
-2.97 + 1.12x + 120x2 = -1x + x

Combine like terms: -1x + x = 0
-2.97 + 1.12x + 120x2 = 0

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

Divide each side by '120'.
-0.02475 + 0.009333333333x + x2 = 0

Move the constant term to the right:

Add '0.02475' to each side of the equation.
-0.02475 + 0.009333333333x + 0.02475 + x2 = 0 + 0.02475

Reorder the terms:
-0.02475 + 0.02475 + 0.009333333333x + x2 = 0 + 0.02475

Combine like terms: -0.02475 + 0.02475 = 0.00000
0.00000 + 0.009333333333x + x2 = 0 + 0.02475
0.009333333333x + x2 = 0 + 0.02475

Combine like terms: 0 + 0.02475 = 0.02475
0.009333333333x + x2 = 0.02475

The x term is 0.009333333333x.  Take half its coefficient (0.004666666667).
Square it (0.00002177777778) and add it to both sides.

Add '0.00002177777778' to each side of the equation.
0.009333333333x + 0.00002177777778 + x2 = 0.02475 + 0.00002177777778

Reorder the terms:
0.00002177777778 + 0.009333333333x + x2 = 0.02475 + 0.00002177777778

Combine like terms: 0.02475 + 0.00002177777778 = 0.02477177777778
0.00002177777778 + 0.009333333333x + x2 = 0.02477177777778

Factor a perfect square on the left side:
(x + 0.004666666667)(x + 0.004666666667) = 0.02477177777778

Calculate the square root of the right side: 0.157390526

Break this problem into two subproblems by setting 
(x + 0.004666666667) equal to 0.157390526 and -0.157390526.

Subproblem 1

x + 0.004666666667 = 0.157390526 Simplifying x + 0.004666666667 = 0.157390526 Reorder the terms: 0.004666666667 + x = 0.157390526 Solving 0.004666666667 + x = 0.157390526 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.004666666667' to each side of the equation. 0.004666666667 + -0.004666666667 + x = 0.157390526 + -0.004666666667 Combine like terms: 0.004666666667 + -0.004666666667 = 0.000000000000 0.000000000000 + x = 0.157390526 + -0.004666666667 x = 0.157390526 + -0.004666666667 Combine like terms: 0.157390526 + -0.004666666667 = 0.152723859333 x = 0.152723859333 Simplifying x = 0.152723859333

Subproblem 2

x + 0.004666666667 = -0.157390526 Simplifying x + 0.004666666667 = -0.157390526 Reorder the terms: 0.004666666667 + x = -0.157390526 Solving 0.004666666667 + x = -0.157390526 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.004666666667' to each side of the equation. 0.004666666667 + -0.004666666667 + x = -0.157390526 + -0.004666666667 Combine like terms: 0.004666666667 + -0.004666666667 = 0.000000000000 0.000000000000 + x = -0.157390526 + -0.004666666667 x = -0.157390526 + -0.004666666667 Combine like terms: -0.157390526 + -0.004666666667 = -0.162057192667 x = -0.162057192667 Simplifying x = -0.162057192667

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.152723859333, -0.162057192667}

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