-0.016x^2+1.152x-15.2=0

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Solution for -0.016x^2+1.152x-15.2=0 equation:


Simplifying
-0.016x2 + 1.152x + -15.2 = 0

Reorder the terms:
-15.2 + 1.152x + -0.016x2 = 0

Solving
-15.2 + 1.152x + -0.016x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.016 the coefficient of the squared term: 

Divide each side by '-0.016'.
950 + -72x + x2 = 0

Move the constant term to the right:

Add '-950' to each side of the equation.
950 + -72x + -950 + x2 = 0 + -950

Reorder the terms:
950 + -950 + -72x + x2 = 0 + -950

Combine like terms: 950 + -950 = 0
0 + -72x + x2 = 0 + -950
-72x + x2 = 0 + -950

Combine like terms: 0 + -950 = -950
-72x + x2 = -950

The x term is -72x.  Take half its coefficient (-36).
Square it (1296) and add it to both sides.

Add '1296' to each side of the equation.
-72x + 1296 + x2 = -950 + 1296

Reorder the terms:
1296 + -72x + x2 = -950 + 1296

Combine like terms: -950 + 1296 = 346
1296 + -72x + x2 = 346

Factor a perfect square on the left side:
(x + -36)(x + -36) = 346

Calculate the square root of the right side: 18.601075238

Break this problem into two subproblems by setting 
(x + -36) equal to 18.601075238 and -18.601075238.

Subproblem 1

x + -36 = 18.601075238 Simplifying x + -36 = 18.601075238 Reorder the terms: -36 + x = 18.601075238 Solving -36 + x = 18.601075238 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + x = 18.601075238 + 36 Combine like terms: -36 + 36 = 0 0 + x = 18.601075238 + 36 x = 18.601075238 + 36 Combine like terms: 18.601075238 + 36 = 54.601075238 x = 54.601075238 Simplifying x = 54.601075238

Subproblem 2

x + -36 = -18.601075238 Simplifying x + -36 = -18.601075238 Reorder the terms: -36 + x = -18.601075238 Solving -36 + x = -18.601075238 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + x = -18.601075238 + 36 Combine like terms: -36 + 36 = 0 0 + x = -18.601075238 + 36 x = -18.601075238 + 36 Combine like terms: -18.601075238 + 36 = 17.398924762 x = 17.398924762 Simplifying x = 17.398924762

Solution

The solution to the problem is based on the solutions from the subproblems. x = {54.601075238, 17.398924762}

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