x^2+.76x-.62=0

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Solution for x^2+.76x-.62=0 equation:


Simplifying
x2 + 0.76x + -0.62 = 0

Reorder the terms:
-0.62 + 0.76x + x2 = 0

Solving
-0.62 + 0.76x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '0.62' to each side of the equation.
-0.62 + 0.76x + 0.62 + x2 = 0 + 0.62

Reorder the terms:
-0.62 + 0.62 + 0.76x + x2 = 0 + 0.62

Combine like terms: -0.62 + 0.62 = 0.00
0.00 + 0.76x + x2 = 0 + 0.62
0.76x + x2 = 0 + 0.62

Combine like terms: 0 + 0.62 = 0.62
0.76x + x2 = 0.62

The x term is 0.76x.  Take half its coefficient (0.38).
Square it (0.1444) and add it to both sides.

Add '0.1444' to each side of the equation.
0.76x + 0.1444 + x2 = 0.62 + 0.1444

Reorder the terms:
0.1444 + 0.76x + x2 = 0.62 + 0.1444

Combine like terms: 0.62 + 0.1444 = 0.7644
0.1444 + 0.76x + x2 = 0.7644

Factor a perfect square on the left side:
(x + 0.38)(x + 0.38) = 0.7644

Calculate the square root of the right side: 0.87429972

Break this problem into two subproblems by setting 
(x + 0.38) equal to 0.87429972 and -0.87429972.

Subproblem 1

x + 0.38 = 0.87429972 Simplifying x + 0.38 = 0.87429972 Reorder the terms: 0.38 + x = 0.87429972 Solving 0.38 + x = 0.87429972 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.38' to each side of the equation. 0.38 + -0.38 + x = 0.87429972 + -0.38 Combine like terms: 0.38 + -0.38 = 0.00 0.00 + x = 0.87429972 + -0.38 x = 0.87429972 + -0.38 Combine like terms: 0.87429972 + -0.38 = 0.49429972 x = 0.49429972 Simplifying x = 0.49429972

Subproblem 2

x + 0.38 = -0.87429972 Simplifying x + 0.38 = -0.87429972 Reorder the terms: 0.38 + x = -0.87429972 Solving 0.38 + x = -0.87429972 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.38' to each side of the equation. 0.38 + -0.38 + x = -0.87429972 + -0.38 Combine like terms: 0.38 + -0.38 = 0.00 0.00 + x = -0.87429972 + -0.38 x = -0.87429972 + -0.38 Combine like terms: -0.87429972 + -0.38 = -1.25429972 x = -1.25429972 Simplifying x = -1.25429972

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.49429972, -1.25429972}

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