-.03x^2+1.2x+10=0

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Solution for -.03x^2+1.2x+10=0 equation:


Simplifying
-0.03x2 + 1.2x + 10 = 0

Reorder the terms:
10 + 1.2x + -0.03x2 = 0

Solving
10 + 1.2x + -0.03x2 = 0

Solving for variable 'x'.

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

Divide each side by '-0.03'.
-333.3333333 + -40x + x2 = 0

Move the constant term to the right:

Add '333.3333333' to each side of the equation.
-333.3333333 + -40x + 333.3333333 + x2 = 0 + 333.3333333

Reorder the terms:
-333.3333333 + 333.3333333 + -40x + x2 = 0 + 333.3333333

Combine like terms: -333.3333333 + 333.3333333 = 0.0000000
0.0000000 + -40x + x2 = 0 + 333.3333333
-40x + x2 = 0 + 333.3333333

Combine like terms: 0 + 333.3333333 = 333.3333333
-40x + x2 = 333.3333333

The x term is -40x.  Take half its coefficient (-20).
Square it (400) and add it to both sides.

Add '400' to each side of the equation.
-40x + 400 + x2 = 333.3333333 + 400

Reorder the terms:
400 + -40x + x2 = 333.3333333 + 400

Combine like terms: 333.3333333 + 400 = 733.3333333
400 + -40x + x2 = 733.3333333

Factor a perfect square on the left side:
(x + -20)(x + -20) = 733.3333333

Calculate the square root of the right side: 27.080128015

Break this problem into two subproblems by setting 
(x + -20) equal to 27.080128015 and -27.080128015.

Subproblem 1

x + -20 = 27.080128015 Simplifying x + -20 = 27.080128015 Reorder the terms: -20 + x = 27.080128015 Solving -20 + x = 27.080128015 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + x = 27.080128015 + 20 Combine like terms: -20 + 20 = 0 0 + x = 27.080128015 + 20 x = 27.080128015 + 20 Combine like terms: 27.080128015 + 20 = 47.080128015 x = 47.080128015 Simplifying x = 47.080128015

Subproblem 2

x + -20 = -27.080128015 Simplifying x + -20 = -27.080128015 Reorder the terms: -20 + x = -27.080128015 Solving -20 + x = -27.080128015 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + x = -27.080128015 + 20 Combine like terms: -20 + 20 = 0 0 + x = -27.080128015 + 20 x = -27.080128015 + 20 Combine like terms: -27.080128015 + 20 = -7.080128015 x = -7.080128015 Simplifying x = -7.080128015

Solution

The solution to the problem is based on the solutions from the subproblems. x = {47.080128015, -7.080128015}

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