x^2+0.2*x-6=0

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Solution for x^2+0.2*x-6=0 equation:


Simplifying
x2 + 0.2x + -6 = 0

Reorder the terms:
-6 + 0.2x + x2 = 0

Solving
-6 + 0.2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 0.2x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + 0.2x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 0.2x + x2 = 0 + 6
0.2x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
0.2x + x2 = 6

The x term is 0.2x.  Take half its coefficient (0.1).
Square it (0.01) and add it to both sides.

Add '0.01' to each side of the equation.
0.2x + 0.01 + x2 = 6 + 0.01

Reorder the terms:
0.01 + 0.2x + x2 = 6 + 0.01

Combine like terms: 6 + 0.01 = 6.01
0.01 + 0.2x + x2 = 6.01

Factor a perfect square on the left side:
(x + 0.1)(x + 0.1) = 6.01

Calculate the square root of the right side: 2.451530134

Break this problem into two subproblems by setting 
(x + 0.1) equal to 2.451530134 and -2.451530134.

Subproblem 1

x + 0.1 = 2.451530134 Simplifying x + 0.1 = 2.451530134 Reorder the terms: 0.1 + x = 2.451530134 Solving 0.1 + x = 2.451530134 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1' to each side of the equation. 0.1 + -0.1 + x = 2.451530134 + -0.1 Combine like terms: 0.1 + -0.1 = 0.0 0.0 + x = 2.451530134 + -0.1 x = 2.451530134 + -0.1 Combine like terms: 2.451530134 + -0.1 = 2.351530134 x = 2.351530134 Simplifying x = 2.351530134

Subproblem 2

x + 0.1 = -2.451530134 Simplifying x + 0.1 = -2.451530134 Reorder the terms: 0.1 + x = -2.451530134 Solving 0.1 + x = -2.451530134 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1' to each side of the equation. 0.1 + -0.1 + x = -2.451530134 + -0.1 Combine like terms: 0.1 + -0.1 = 0.0 0.0 + x = -2.451530134 + -0.1 x = -2.451530134 + -0.1 Combine like terms: -2.451530134 + -0.1 = -2.551530134 x = -2.551530134 Simplifying x = -2.551530134

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.351530134, -2.551530134}

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