32x^2+72x-45=0

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Solution for 32x^2+72x-45=0 equation:


Simplifying
32x2 + 72x + -45 = 0

Reorder the terms:
-45 + 72x + 32x2 = 0

Solving
-45 + 72x + 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'.
-1.40625 + 2.25x + x2 = 0

Move the constant term to the right:

Add '1.40625' to each side of the equation.
-1.40625 + 2.25x + 1.40625 + x2 = 0 + 1.40625

Reorder the terms:
-1.40625 + 1.40625 + 2.25x + x2 = 0 + 1.40625

Combine like terms: -1.40625 + 1.40625 = 0.00000
0.00000 + 2.25x + x2 = 0 + 1.40625
2.25x + x2 = 0 + 1.40625

Combine like terms: 0 + 1.40625 = 1.40625
2.25x + x2 = 1.40625

The x term is 2.25x.  Take half its coefficient (1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
2.25x + 1.265625 + x2 = 1.40625 + 1.265625

Reorder the terms:
1.265625 + 2.25x + x2 = 1.40625 + 1.265625

Combine like terms: 1.40625 + 1.265625 = 2.671875
1.265625 + 2.25x + x2 = 2.671875

Factor a perfect square on the left side:
(x + 1.125)(x + 1.125) = 2.671875

Calculate the square root of the right side: 1.634587104

Break this problem into two subproblems by setting 
(x + 1.125) equal to 1.634587104 and -1.634587104.

Subproblem 1

x + 1.125 = 1.634587104 Simplifying x + 1.125 = 1.634587104 Reorder the terms: 1.125 + x = 1.634587104 Solving 1.125 + x = 1.634587104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + x = 1.634587104 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = 1.634587104 + -1.125 x = 1.634587104 + -1.125 Combine like terms: 1.634587104 + -1.125 = 0.509587104 x = 0.509587104 Simplifying x = 0.509587104

Subproblem 2

x + 1.125 = -1.634587104 Simplifying x + 1.125 = -1.634587104 Reorder the terms: 1.125 + x = -1.634587104 Solving 1.125 + x = -1.634587104 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + x = -1.634587104 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = -1.634587104 + -1.125 x = -1.634587104 + -1.125 Combine like terms: -1.634587104 + -1.125 = -2.759587104 x = -2.759587104 Simplifying x = -2.759587104

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.509587104, -2.759587104}

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