x^2-2.4x-10=0

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Solution for x^2-2.4x-10=0 equation:


Simplifying
x2 + -2.4x + -10 = 0

Reorder the terms:
-10 + -2.4x + x2 = 0

Solving
-10 + -2.4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + -2.4x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + -2.4x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -2.4x + x2 = 0 + 10
-2.4x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
-2.4x + x2 = 10

The x term is -2.4x.  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.
-2.4x + 1.44 + x2 = 10 + 1.44

Reorder the terms:
1.44 + -2.4x + x2 = 10 + 1.44

Combine like terms: 10 + 1.44 = 11.44
1.44 + -2.4x + x2 = 11.44

Factor a perfect square on the left side:
(x + -1.2)(x + -1.2) = 11.44

Calculate the square root of the right side: 3.382306905

Break this problem into two subproblems by setting 
(x + -1.2) equal to 3.382306905 and -3.382306905.

Subproblem 1

x + -1.2 = 3.382306905 Simplifying x + -1.2 = 3.382306905 Reorder the terms: -1.2 + x = 3.382306905 Solving -1.2 + x = 3.382306905 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 = 3.382306905 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + x = 3.382306905 + 1.2 x = 3.382306905 + 1.2 Combine like terms: 3.382306905 + 1.2 = 4.582306905 x = 4.582306905 Simplifying x = 4.582306905

Subproblem 2

x + -1.2 = -3.382306905 Simplifying x + -1.2 = -3.382306905 Reorder the terms: -1.2 + x = -3.382306905 Solving -1.2 + x = -3.382306905 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 = -3.382306905 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + x = -3.382306905 + 1.2 x = -3.382306905 + 1.2 Combine like terms: -3.382306905 + 1.2 = -2.182306905 x = -2.182306905 Simplifying x = -2.182306905

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.582306905, -2.182306905}

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