2x^2+3x+1.125=0

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Solution for 2x^2+3x+1.125=0 equation:


Simplifying
2x2 + 3x + 1.125 = 0

Reorder the terms:
1.125 + 3x + 2x2 = 0

Solving
1.125 + 3x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
0.5625 + 1.5x + x2 = 0

Move the constant term to the right:

Add '-0.5625' to each side of the equation.
0.5625 + 1.5x + -0.5625 + x2 = 0 + -0.5625

Reorder the terms:
0.5625 + -0.5625 + 1.5x + x2 = 0 + -0.5625

Combine like terms: 0.5625 + -0.5625 = 0.0000
0.0000 + 1.5x + x2 = 0 + -0.5625
1.5x + x2 = 0 + -0.5625

Combine like terms: 0 + -0.5625 = -0.5625
1.5x + x2 = -0.5625

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = -0.5625 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = -0.5625 + 0.5625

Combine like terms: -0.5625 + 0.5625 = 0.0000
0.5625 + 1.5x + x2 = 0.0000

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 0.0000

Calculate the square root of the right side: 0.0000

Break this problem into two subproblems by setting 
(x + 0.75) equal to 0.0000 and 0.0000.

Subproblem 1

x + 0.75 = 0.0000 Simplifying x + 0.75 = 0.0000 Reorder the terms: 0.75 + x = 0.0000 Solving 0.75 + x = 0.0000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 0.0000 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 0.0000 + -0.75 x = 0.0000 + -0.75 Combine like terms: 0.0000 + -0.75 = -0.75 x = -0.75 Simplifying x = -0.75

Subproblem 2

x + 0.75 = 0.0000 Simplifying x + 0.75 = 0.0000 Reorder the terms: 0.75 + x = 0.0000 Solving 0.75 + x = 0.0000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 0.0000 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 0.0000 + -0.75 x = 0.0000 + -0.75 Combine like terms: 0.0000 + -0.75 = -0.75 x = -0.75 Simplifying x = -0.75

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.75, -0.75}

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