8x^2+0.5x=0.09

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Solution for 8x^2+0.5x=0.09 equation:


Simplifying
8x2 + 0.5x = 0.09

Reorder the terms:
0.5x + 8x2 = 0.09

Solving
0.5x + 8x2 = 0.09

Solving for variable 'x'.

Reorder the terms:
-0.09 + 0.5x + 8x2 = 0.09 + -0.09

Combine like terms: 0.09 + -0.09 = 0.00
-0.09 + 0.5x + 8x2 = 0.00

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

Divide each side by '8'.
-0.01125 + 0.0625x + x2 = 0.00

Move the constant term to the right:

Add '0.01125' to each side of the equation.
-0.01125 + 0.0625x + 0.01125 + x2 = 0.00 + 0.01125

Reorder the terms:
-0.01125 + 0.01125 + 0.0625x + x2 = 0.00 + 0.01125

Combine like terms: -0.01125 + 0.01125 = 0.00000
0.00000 + 0.0625x + x2 = 0.00 + 0.01125
0.0625x + x2 = 0.00 + 0.01125

Combine like terms: 0.00 + 0.01125 = 0.01125
0.0625x + x2 = 0.01125

The x term is 0.0625x.  Take half its coefficient (0.03125).
Square it (0.0009765625) and add it to both sides.

Add '0.0009765625' to each side of the equation.
0.0625x + 0.0009765625 + x2 = 0.01125 + 0.0009765625

Reorder the terms:
0.0009765625 + 0.0625x + x2 = 0.01125 + 0.0009765625

Combine like terms: 0.01125 + 0.0009765625 = 0.0122265625
0.0009765625 + 0.0625x + x2 = 0.0122265625

Factor a perfect square on the left side:
(x + 0.03125)(x + 0.03125) = 0.0122265625

Calculate the square root of the right side: 0.110573788

Break this problem into two subproblems by setting 
(x + 0.03125) equal to 0.110573788 and -0.110573788.

Subproblem 1

x + 0.03125 = 0.110573788 Simplifying x + 0.03125 = 0.110573788 Reorder the terms: 0.03125 + x = 0.110573788 Solving 0.03125 + x = 0.110573788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03125' to each side of the equation. 0.03125 + -0.03125 + x = 0.110573788 + -0.03125 Combine like terms: 0.03125 + -0.03125 = 0.00000 0.00000 + x = 0.110573788 + -0.03125 x = 0.110573788 + -0.03125 Combine like terms: 0.110573788 + -0.03125 = 0.079323788 x = 0.079323788 Simplifying x = 0.079323788

Subproblem 2

x + 0.03125 = -0.110573788 Simplifying x + 0.03125 = -0.110573788 Reorder the terms: 0.03125 + x = -0.110573788 Solving 0.03125 + x = -0.110573788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03125' to each side of the equation. 0.03125 + -0.03125 + x = -0.110573788 + -0.03125 Combine like terms: 0.03125 + -0.03125 = 0.00000 0.00000 + x = -0.110573788 + -0.03125 x = -0.110573788 + -0.03125 Combine like terms: -0.110573788 + -0.03125 = -0.141823788 x = -0.141823788 Simplifying x = -0.141823788

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.079323788, -0.141823788}

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