32x^2+40x+9=0

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Solution for 32x^2+40x+9=0 equation:


Simplifying
32x2 + 40x + 9 = 0

Reorder the terms:
9 + 40x + 32x2 = 0

Solving
9 + 40x + 32x2 = 0

Solving for variable 'x'.

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

Divide each side by '32'.
0.28125 + 1.25x + x2 = 0

Move the constant term to the right:

Add '-0.28125' to each side of the equation.
0.28125 + 1.25x + -0.28125 + x2 = 0 + -0.28125

Reorder the terms:
0.28125 + -0.28125 + 1.25x + x2 = 0 + -0.28125

Combine like terms: 0.28125 + -0.28125 = 0.00000
0.00000 + 1.25x + x2 = 0 + -0.28125
1.25x + x2 = 0 + -0.28125

Combine like terms: 0 + -0.28125 = -0.28125
1.25x + x2 = -0.28125

The x term is 1.25x.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25x + 0.390625 + x2 = -0.28125 + 0.390625

Reorder the terms:
0.390625 + 1.25x + x2 = -0.28125 + 0.390625

Combine like terms: -0.28125 + 0.390625 = 0.109375
0.390625 + 1.25x + x2 = 0.109375

Factor a perfect square on the left side:
(x + 0.625)(x + 0.625) = 0.109375

Calculate the square root of the right side: 0.330718914

Break this problem into two subproblems by setting 
(x + 0.625) equal to 0.330718914 and -0.330718914.

Subproblem 1

x + 0.625 = 0.330718914 Simplifying x + 0.625 = 0.330718914 Reorder the terms: 0.625 + x = 0.330718914 Solving 0.625 + x = 0.330718914 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = 0.330718914 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = 0.330718914 + -0.625 x = 0.330718914 + -0.625 Combine like terms: 0.330718914 + -0.625 = -0.294281086 x = -0.294281086 Simplifying x = -0.294281086

Subproblem 2

x + 0.625 = -0.330718914 Simplifying x + 0.625 = -0.330718914 Reorder the terms: 0.625 + x = -0.330718914 Solving 0.625 + x = -0.330718914 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = -0.330718914 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = -0.330718914 + -0.625 x = -0.330718914 + -0.625 Combine like terms: -0.330718914 + -0.625 = -0.955718914 x = -0.955718914 Simplifying x = -0.955718914

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.294281086, -0.955718914}

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