8x^2+0.9x=0.06

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Solution for 8x^2+0.9x=0.06 equation:


Simplifying
8x2 + 0.9x = 0.06

Reorder the terms:
0.9x + 8x2 = 0.06

Solving
0.9x + 8x2 = 0.06

Solving for variable 'x'.

Reorder the terms:
-0.06 + 0.9x + 8x2 = 0.06 + -0.06

Combine like terms: 0.06 + -0.06 = 0.00
-0.06 + 0.9x + 8x2 = 0.00

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

Divide each side by '8'.
-0.0075 + 0.1125x + x2 = 0.00

Move the constant term to the right:

Add '0.0075' to each side of the equation.
-0.0075 + 0.1125x + 0.0075 + x2 = 0.00 + 0.0075

Reorder the terms:
-0.0075 + 0.0075 + 0.1125x + x2 = 0.00 + 0.0075

Combine like terms: -0.0075 + 0.0075 = 0.0000
0.0000 + 0.1125x + x2 = 0.00 + 0.0075
0.1125x + x2 = 0.00 + 0.0075

Combine like terms: 0.00 + 0.0075 = 0.0075
0.1125x + x2 = 0.0075

The x term is 0.1125x.  Take half its coefficient (0.05625).
Square it (0.0031640625) and add it to both sides.

Add '0.0031640625' to each side of the equation.
0.1125x + 0.0031640625 + x2 = 0.0075 + 0.0031640625

Reorder the terms:
0.0031640625 + 0.1125x + x2 = 0.0075 + 0.0031640625

Combine like terms: 0.0075 + 0.0031640625 = 0.0106640625
0.0031640625 + 0.1125x + x2 = 0.0106640625

Factor a perfect square on the left side:
(x + 0.05625)(x + 0.05625) = 0.0106640625

Calculate the square root of the right side: 0.103266948

Break this problem into two subproblems by setting 
(x + 0.05625) equal to 0.103266948 and -0.103266948.

Subproblem 1

x + 0.05625 = 0.103266948 Simplifying x + 0.05625 = 0.103266948 Reorder the terms: 0.05625 + x = 0.103266948 Solving 0.05625 + x = 0.103266948 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.05625' to each side of the equation. 0.05625 + -0.05625 + x = 0.103266948 + -0.05625 Combine like terms: 0.05625 + -0.05625 = 0.00000 0.00000 + x = 0.103266948 + -0.05625 x = 0.103266948 + -0.05625 Combine like terms: 0.103266948 + -0.05625 = 0.047016948 x = 0.047016948 Simplifying x = 0.047016948

Subproblem 2

x + 0.05625 = -0.103266948 Simplifying x + 0.05625 = -0.103266948 Reorder the terms: 0.05625 + x = -0.103266948 Solving 0.05625 + x = -0.103266948 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.05625' to each side of the equation. 0.05625 + -0.05625 + x = -0.103266948 + -0.05625 Combine like terms: 0.05625 + -0.05625 = 0.00000 0.00000 + x = -0.103266948 + -0.05625 x = -0.103266948 + -0.05625 Combine like terms: -0.103266948 + -0.05625 = -0.159516948 x = -0.159516948 Simplifying x = -0.159516948

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.047016948, -0.159516948}

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