=2x^2-5x+2.25

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Solution for =2x^2-5x+2.25 equation:


Simplifying
0 = 2x2 + -5x + 2.25

Reorder the terms:
0 = 2.25 + -5x + 2x2

Solving
0 = 2.25 + -5x + 2x2

Solving for variable 'x'.

Combine like terms: 0 + -2.25 = -2.25
-2.25 + 5x + -2x2 = 2.25 + -5x + 2x2 + -2.25 + 5x + -2x2

Reorder the terms:
-2.25 + 5x + -2x2 = 2.25 + -2.25 + -5x + 5x + 2x2 + -2x2

Combine like terms: 2.25 + -2.25 = 0.00
-2.25 + 5x + -2x2 = 0.00 + -5x + 5x + 2x2 + -2x2
-2.25 + 5x + -2x2 = -5x + 5x + 2x2 + -2x2

Combine like terms: -5x + 5x = 0
-2.25 + 5x + -2x2 = 0 + 2x2 + -2x2
-2.25 + 5x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-2.25 + 5x + -2x2 = 0

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

Divide each side by '-2'.
1.125 + -2.5x + x2 = 0

Move the constant term to the right:

Add '-1.125' to each side of the equation.
1.125 + -2.5x + -1.125 + x2 = 0 + -1.125

Reorder the terms:
1.125 + -1.125 + -2.5x + x2 = 0 + -1.125

Combine like terms: 1.125 + -1.125 = 0.000
0.000 + -2.5x + x2 = 0 + -1.125
-2.5x + x2 = 0 + -1.125

Combine like terms: 0 + -1.125 = -1.125
-2.5x + x2 = -1.125

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = -1.125 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -1.125 + 1.5625

Combine like terms: -1.125 + 1.5625 = 0.4375
1.5625 + -2.5x + x2 = 0.4375

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 0.4375

Calculate the square root of the right side: 0.661437828

Break this problem into two subproblems by setting 
(x + -1.25) equal to 0.661437828 and -0.661437828.

Subproblem 1

x + -1.25 = 0.661437828 Simplifying x + -1.25 = 0.661437828 Reorder the terms: -1.25 + x = 0.661437828 Solving -1.25 + x = 0.661437828 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 0.661437828 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 0.661437828 + 1.25 x = 0.661437828 + 1.25 Combine like terms: 0.661437828 + 1.25 = 1.911437828 x = 1.911437828 Simplifying x = 1.911437828

Subproblem 2

x + -1.25 = -0.661437828 Simplifying x + -1.25 = -0.661437828 Reorder the terms: -1.25 + x = -0.661437828 Solving -1.25 + x = -0.661437828 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -0.661437828 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -0.661437828 + 1.25 x = -0.661437828 + 1.25 Combine like terms: -0.661437828 + 1.25 = 0.588562172 x = 0.588562172 Simplifying x = 0.588562172

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.911437828, 0.588562172}

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