-0.02x^2+1.2x+6.1=0

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Solution for -0.02x^2+1.2x+6.1=0 equation:


Simplifying
-0.02x2 + 1.2x + 6.1 = 0

Reorder the terms:
6.1 + 1.2x + -0.02x2 = 0

Solving
6.1 + 1.2x + -0.02x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.02 the coefficient of the squared term: 

Divide each side by '-0.02'.
-305 + -60x + x2 = 0

Move the constant term to the right:

Add '305' to each side of the equation.
-305 + -60x + 305 + x2 = 0 + 305

Reorder the terms:
-305 + 305 + -60x + x2 = 0 + 305

Combine like terms: -305 + 305 = 0
0 + -60x + x2 = 0 + 305
-60x + x2 = 0 + 305

Combine like terms: 0 + 305 = 305
-60x + x2 = 305

The x term is -60x.  Take half its coefficient (-30).
Square it (900) and add it to both sides.

Add '900' to each side of the equation.
-60x + 900 + x2 = 305 + 900

Reorder the terms:
900 + -60x + x2 = 305 + 900

Combine like terms: 305 + 900 = 1205
900 + -60x + x2 = 1205

Factor a perfect square on the left side:
(x + -30)(x + -30) = 1205

Calculate the square root of the right side: 34.713109915

Break this problem into two subproblems by setting 
(x + -30) equal to 34.713109915 and -34.713109915.

Subproblem 1

x + -30 = 34.713109915 Simplifying x + -30 = 34.713109915 Reorder the terms: -30 + x = 34.713109915 Solving -30 + x = 34.713109915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + x = 34.713109915 + 30 Combine like terms: -30 + 30 = 0 0 + x = 34.713109915 + 30 x = 34.713109915 + 30 Combine like terms: 34.713109915 + 30 = 64.713109915 x = 64.713109915 Simplifying x = 64.713109915

Subproblem 2

x + -30 = -34.713109915 Simplifying x + -30 = -34.713109915 Reorder the terms: -30 + x = -34.713109915 Solving -30 + x = -34.713109915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + x = -34.713109915 + 30 Combine like terms: -30 + 30 = 0 0 + x = -34.713109915 + 30 x = -34.713109915 + 30 Combine like terms: -34.713109915 + 30 = -4.713109915 x = -4.713109915 Simplifying x = -4.713109915

Solution

The solution to the problem is based on the solutions from the subproblems. x = {64.713109915, -4.713109915}

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