x+2x^2=1.44

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Solution for x+2x^2=1.44 equation:


Simplifying
x + 2x2 = 1.44

Solving
x + 2x2 = 1.44

Solving for variable 'x'.

Reorder the terms:
-1.44 + x + 2x2 = 1.44 + -1.44

Combine like terms: 1.44 + -1.44 = 0.00
-1.44 + x + 2x2 = 0.00

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

Divide each side by '2'.
-0.72 + 0.5x + x2 = 0.00

Move the constant term to the right:

Add '0.72' to each side of the equation.
-0.72 + 0.5x + 0.72 + x2 = 0.00 + 0.72

Reorder the terms:
-0.72 + 0.72 + 0.5x + x2 = 0.00 + 0.72

Combine like terms: -0.72 + 0.72 = 0.00
0.00 + 0.5x + x2 = 0.00 + 0.72
0.5x + x2 = 0.00 + 0.72

Combine like terms: 0.00 + 0.72 = 0.72
0.5x + x2 = 0.72

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.5x + 0.25 + x2 = 0.72 + 0.25

Reorder the terms:
0.25 + 0.5x + x2 = 0.72 + 0.25

Combine like terms: 0.72 + 0.25 = 0.97
0.25 + 0.5x + x2 = 0.97

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.97

Calculate the square root of the right side: 0.98488578

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.98488578 and -0.98488578.

Subproblem 1

x + 0.5 = 0.98488578 Simplifying x + 0.5 = 0.98488578 Reorder the terms: 0.5 + x = 0.98488578 Solving 0.5 + x = 0.98488578 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.98488578 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.98488578 + -0.5 x = 0.98488578 + -0.5 Combine like terms: 0.98488578 + -0.5 = 0.48488578 x = 0.48488578 Simplifying x = 0.48488578

Subproblem 2

x + 0.5 = -0.98488578 Simplifying x + 0.5 = -0.98488578 Reorder the terms: 0.5 + x = -0.98488578 Solving 0.5 + x = -0.98488578 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.98488578 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.98488578 + -0.5 x = -0.98488578 + -0.5 Combine like terms: -0.98488578 + -0.5 = -1.48488578 x = -1.48488578 Simplifying x = -1.48488578

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.48488578, -1.48488578}

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