x^2+.0075x-.00485=0

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Solution for x^2+.0075x-.00485=0 equation:


Simplifying
x2 + 0.0075x + -0.00485 = 0

Reorder the terms:
-0.00485 + 0.0075x + x2 = 0

Solving
-0.00485 + 0.0075x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '0.00485' to each side of the equation.
-0.00485 + 0.0075x + 0.00485 + x2 = 0 + 0.00485

Reorder the terms:
-0.00485 + 0.00485 + 0.0075x + x2 = 0 + 0.00485

Combine like terms: -0.00485 + 0.00485 = 0.00000
0.00000 + 0.0075x + x2 = 0 + 0.00485
0.0075x + x2 = 0 + 0.00485

Combine like terms: 0 + 0.00485 = 0.00485
0.0075x + x2 = 0.00485

The x term is 0.0075x.  Take half its coefficient (0.00375).
Square it (0.0000140625) and add it to both sides.

Add '0.0000140625' to each side of the equation.
0.0075x + 0.0000140625 + x2 = 0.00485 + 0.0000140625

Reorder the terms:
0.0000140625 + 0.0075x + x2 = 0.00485 + 0.0000140625

Combine like terms: 0.00485 + 0.0000140625 = 0.0048640625
0.0000140625 + 0.0075x + x2 = 0.0048640625

Factor a perfect square on the left side:
(x + 0.00375)(x + 0.00375) = 0.0048640625

Calculate the square root of the right side: 0.069742831

Break this problem into two subproblems by setting 
(x + 0.00375) equal to 0.069742831 and -0.069742831.

Subproblem 1

x + 0.00375 = 0.069742831 Simplifying x + 0.00375 = 0.069742831 Reorder the terms: 0.00375 + x = 0.069742831 Solving 0.00375 + x = 0.069742831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00375' to each side of the equation. 0.00375 + -0.00375 + x = 0.069742831 + -0.00375 Combine like terms: 0.00375 + -0.00375 = 0.00000 0.00000 + x = 0.069742831 + -0.00375 x = 0.069742831 + -0.00375 Combine like terms: 0.069742831 + -0.00375 = 0.065992831 x = 0.065992831 Simplifying x = 0.065992831

Subproblem 2

x + 0.00375 = -0.069742831 Simplifying x + 0.00375 = -0.069742831 Reorder the terms: 0.00375 + x = -0.069742831 Solving 0.00375 + x = -0.069742831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.00375' to each side of the equation. 0.00375 + -0.00375 + x = -0.069742831 + -0.00375 Combine like terms: 0.00375 + -0.00375 = 0.00000 0.00000 + x = -0.069742831 + -0.00375 x = -0.069742831 + -0.00375 Combine like terms: -0.069742831 + -0.00375 = -0.073492831 x = -0.073492831 Simplifying x = -0.073492831

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.065992831, -0.073492831}

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