2.25x+x^2=2.25

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


Simplifying
2.25x + x2 = 2.25

Solving
2.25x + x2 = 2.25

Solving for variable 'x'.

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

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

Begin completing the square.

Move the constant term to the right:

Add '2.25' to each side of the equation.
-2.25 + 2.25x + 2.25 + x2 = 0.00 + 2.25

Reorder the terms:
-2.25 + 2.25 + 2.25x + x2 = 0.00 + 2.25

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

Combine like terms: 0.00 + 2.25 = 2.25
2.25x + x2 = 2.25

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 = 2.25 + 1.265625

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

Combine like terms: 2.25 + 1.265625 = 3.515625
1.265625 + 2.25x + x2 = 3.515625

Factor a perfect square on the left side:
(x + 1.125)(x + 1.125) = 3.515625

Calculate the square root of the right side: 1.875

Break this problem into two subproblems by setting 
(x + 1.125) equal to 1.875 and -1.875.

Subproblem 1

x + 1.125 = 1.875 Simplifying x + 1.125 = 1.875 Reorder the terms: 1.125 + x = 1.875 Solving 1.125 + x = 1.875 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 = 1.875 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = 1.875 + -1.125 x = 1.875 + -1.125 Combine like terms: 1.875 + -1.125 = 0.75 x = 0.75 Simplifying x = 0.75

Subproblem 2

x + 1.125 = -1.875 Simplifying x + 1.125 = -1.875 Reorder the terms: 1.125 + x = -1.875 Solving 1.125 + x = -1.875 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 = -1.875 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = -1.875 + -1.125 x = -1.875 + -1.125 Combine like terms: -1.875 + -1.125 = -3 x = -3 Simplifying x = -3

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.75, -3}

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