-4.1x^2+5x-0.7=0

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Solution for -4.1x^2+5x-0.7=0 equation:


Simplifying
-4.1x2 + 5x + -0.7 = 0

Reorder the terms:
-0.7 + 5x + -4.1x2 = 0

Solving
-0.7 + 5x + -4.1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4.1 the coefficient of the squared term: 

Divide each side by '-4.1'.
0.1707317073 + -1.219512195x + x2 = 0

Move the constant term to the right:

Add '-0.1707317073' to each side of the equation.
0.1707317073 + -1.219512195x + -0.1707317073 + x2 = 0 + -0.1707317073

Reorder the terms:
0.1707317073 + -0.1707317073 + -1.219512195x + x2 = 0 + -0.1707317073

Combine like terms: 0.1707317073 + -0.1707317073 = 0.0000000000
0.0000000000 + -1.219512195x + x2 = 0 + -0.1707317073
-1.219512195x + x2 = 0 + -0.1707317073

Combine like terms: 0 + -0.1707317073 = -0.1707317073
-1.219512195x + x2 = -0.1707317073

The x term is -1.219512195x.  Take half its coefficient (-0.6097560975).
Square it (0.3718024984) and add it to both sides.

Add '0.3718024984' to each side of the equation.
-1.219512195x + 0.3718024984 + x2 = -0.1707317073 + 0.3718024984

Reorder the terms:
0.3718024984 + -1.219512195x + x2 = -0.1707317073 + 0.3718024984

Combine like terms: -0.1707317073 + 0.3718024984 = 0.2010707911
0.3718024984 + -1.219512195x + x2 = 0.2010707911

Factor a perfect square on the left side:
(x + -0.6097560975)(x + -0.6097560975) = 0.2010707911

Calculate the square root of the right side: 0.448409178

Break this problem into two subproblems by setting 
(x + -0.6097560975) equal to 0.448409178 and -0.448409178.

Subproblem 1

x + -0.6097560975 = 0.448409178 Simplifying x + -0.6097560975 = 0.448409178 Reorder the terms: -0.6097560975 + x = 0.448409178 Solving -0.6097560975 + x = 0.448409178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6097560975' to each side of the equation. -0.6097560975 + 0.6097560975 + x = 0.448409178 + 0.6097560975 Combine like terms: -0.6097560975 + 0.6097560975 = 0.0000000000 0.0000000000 + x = 0.448409178 + 0.6097560975 x = 0.448409178 + 0.6097560975 Combine like terms: 0.448409178 + 0.6097560975 = 1.0581652755 x = 1.0581652755 Simplifying x = 1.0581652755

Subproblem 2

x + -0.6097560975 = -0.448409178 Simplifying x + -0.6097560975 = -0.448409178 Reorder the terms: -0.6097560975 + x = -0.448409178 Solving -0.6097560975 + x = -0.448409178 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6097560975' to each side of the equation. -0.6097560975 + 0.6097560975 + x = -0.448409178 + 0.6097560975 Combine like terms: -0.6097560975 + 0.6097560975 = 0.0000000000 0.0000000000 + x = -0.448409178 + 0.6097560975 x = -0.448409178 + 0.6097560975 Combine like terms: -0.448409178 + 0.6097560975 = 0.1613469195 x = 0.1613469195 Simplifying x = 0.1613469195

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.0581652755, 0.1613469195}

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