10x^2-32x=9

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Solution for 10x^2-32x=9 equation:


Simplifying
10x2 + -32x = 9

Reorder the terms:
-32x + 10x2 = 9

Solving
-32x + 10x2 = 9

Solving for variable 'x'.

Reorder the terms:
-9 + -32x + 10x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + -32x + 10x2 = 0

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

Divide each side by '10'.
-0.9 + -3.2x + x2 = 0

Move the constant term to the right:

Add '0.9' to each side of the equation.
-0.9 + -3.2x + 0.9 + x2 = 0 + 0.9

Reorder the terms:
-0.9 + 0.9 + -3.2x + x2 = 0 + 0.9

Combine like terms: -0.9 + 0.9 = 0.0
0.0 + -3.2x + x2 = 0 + 0.9
-3.2x + x2 = 0 + 0.9

Combine like terms: 0 + 0.9 = 0.9
-3.2x + x2 = 0.9

The x term is -3.2x.  Take half its coefficient (-1.6).
Square it (2.56) and add it to both sides.

Add '2.56' to each side of the equation.
-3.2x + 2.56 + x2 = 0.9 + 2.56

Reorder the terms:
2.56 + -3.2x + x2 = 0.9 + 2.56

Combine like terms: 0.9 + 2.56 = 3.46
2.56 + -3.2x + x2 = 3.46

Factor a perfect square on the left side:
(x + -1.6)(x + -1.6) = 3.46

Calculate the square root of the right side: 1.860107524

Break this problem into two subproblems by setting 
(x + -1.6) equal to 1.860107524 and -1.860107524.

Subproblem 1

x + -1.6 = 1.860107524 Simplifying x + -1.6 = 1.860107524 Reorder the terms: -1.6 + x = 1.860107524 Solving -1.6 + x = 1.860107524 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.6' to each side of the equation. -1.6 + 1.6 + x = 1.860107524 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + x = 1.860107524 + 1.6 x = 1.860107524 + 1.6 Combine like terms: 1.860107524 + 1.6 = 3.460107524 x = 3.460107524 Simplifying x = 3.460107524

Subproblem 2

x + -1.6 = -1.860107524 Simplifying x + -1.6 = -1.860107524 Reorder the terms: -1.6 + x = -1.860107524 Solving -1.6 + x = -1.860107524 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.6' to each side of the equation. -1.6 + 1.6 + x = -1.860107524 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + x = -1.860107524 + 1.6 x = -1.860107524 + 1.6 Combine like terms: -1.860107524 + 1.6 = -0.260107524 x = -0.260107524 Simplifying x = -0.260107524

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.460107524, -0.260107524}

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