x^2+2.40x+1.44=0

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Solution for x^2+2.40x+1.44=0 equation:


Simplifying
x2 + 2.40x + 1.44 = 0

Reorder the terms:
1.44 + 2.40x + x2 = 0

Solving
1.44 + 2.40x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-1.44' to each side of the equation.
1.44 + 2.40x + -1.44 + x2 = 0 + -1.44

Reorder the terms:
1.44 + -1.44 + 2.40x + x2 = 0 + -1.44

Combine like terms: 1.44 + -1.44 = 0.00
0.00 + 2.40x + x2 = 0 + -1.44
2.40x + x2 = 0 + -1.44

Combine like terms: 0 + -1.44 = -1.44
2.40x + x2 = -1.44

The x term is 2.40x.  Take half its coefficient (1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
2.40x + 1.44 + x2 = -1.44 + 1.44

Reorder the terms:
1.44 + 2.40x + x2 = -1.44 + 1.44

Combine like terms: -1.44 + 1.44 = 0.00
1.44 + 2.40x + x2 = 0.00

Factor a perfect square on the left side:
(x + 1.2)(x + 1.2) = 0.00

Calculate the square root of the right side: 0.00

Break this problem into two subproblems by setting 
(x + 1.2) equal to 0.00 and 0.00.

Subproblem 1

x + 1.2 = 0.00 Simplifying x + 1.2 = 0.00 Reorder the terms: 1.2 + x = 0.00 Solving 1.2 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.2' to each side of the equation. 1.2 + -1.2 + x = 0.00 + -1.2 Combine like terms: 1.2 + -1.2 = 0.0 0.0 + x = 0.00 + -1.2 x = 0.00 + -1.2 Combine like terms: 0.00 + -1.2 = -1.2 x = -1.2 Simplifying x = -1.2

Subproblem 2

x + 1.2 = 0.00 Simplifying x + 1.2 = 0.00 Reorder the terms: 1.2 + x = 0.00 Solving 1.2 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.2' to each side of the equation. 1.2 + -1.2 + x = 0.00 + -1.2 Combine like terms: 1.2 + -1.2 = 0.0 0.0 + x = 0.00 + -1.2 x = 0.00 + -1.2 Combine like terms: 0.00 + -1.2 = -1.2 x = -1.2 Simplifying x = -1.2

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.2, -1.2}

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