-0.005x^2+0.3x+1.5=0

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Solution for -0.005x^2+0.3x+1.5=0 equation:


Simplifying
-0.005x2 + 0.3x + 1.5 = 0

Reorder the terms:
1.5 + 0.3x + -0.005x2 = 0

Solving
1.5 + 0.3x + -0.005x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.005 the coefficient of the squared term: 

Divide each side by '-0.005'.
-300 + -60x + x2 = 0

Move the constant term to the right:

Add '300' to each side of the equation.
-300 + -60x + 300 + x2 = 0 + 300

Reorder the terms:
-300 + 300 + -60x + x2 = 0 + 300

Combine like terms: -300 + 300 = 0
0 + -60x + x2 = 0 + 300
-60x + x2 = 0 + 300

Combine like terms: 0 + 300 = 300
-60x + x2 = 300

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 = 300 + 900

Reorder the terms:
900 + -60x + x2 = 300 + 900

Combine like terms: 300 + 900 = 1200
900 + -60x + x2 = 1200

Factor a perfect square on the left side:
(x + -30)(x + -30) = 1200

Calculate the square root of the right side: 34.641016151

Break this problem into two subproblems by setting 
(x + -30) equal to 34.641016151 and -34.641016151.

Subproblem 1

x + -30 = 34.641016151 Simplifying x + -30 = 34.641016151 Reorder the terms: -30 + x = 34.641016151 Solving -30 + x = 34.641016151 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 = 34.641016151 + 30 Combine like terms: -30 + 30 = 0 0 + x = 34.641016151 + 30 x = 34.641016151 + 30 Combine like terms: 34.641016151 + 30 = 64.641016151 x = 64.641016151 Simplifying x = 64.641016151

Subproblem 2

x + -30 = -34.641016151 Simplifying x + -30 = -34.641016151 Reorder the terms: -30 + x = -34.641016151 Solving -30 + x = -34.641016151 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 = -34.641016151 + 30 Combine like terms: -30 + 30 = 0 0 + x = -34.641016151 + 30 x = -34.641016151 + 30 Combine like terms: -34.641016151 + 30 = -4.641016151 x = -4.641016151 Simplifying x = -4.641016151

Solution

The solution to the problem is based on the solutions from the subproblems. x = {64.641016151, -4.641016151}

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