5x^2+7x-41=0

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Solution for 5x^2+7x-41=0 equation:


Simplifying
5x2 + 7x + -41 = 0

Reorder the terms:
-41 + 7x + 5x2 = 0

Solving
-41 + 7x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-8.2 + 1.4x + x2 = 0

Move the constant term to the right:

Add '8.2' to each side of the equation.
-8.2 + 1.4x + 8.2 + x2 = 0 + 8.2

Reorder the terms:
-8.2 + 8.2 + 1.4x + x2 = 0 + 8.2

Combine like terms: -8.2 + 8.2 = 0.0
0.0 + 1.4x + x2 = 0 + 8.2
1.4x + x2 = 0 + 8.2

Combine like terms: 0 + 8.2 = 8.2
1.4x + x2 = 8.2

The x term is 1.4x.  Take half its coefficient (0.7).
Square it (0.49) and add it to both sides.

Add '0.49' to each side of the equation.
1.4x + 0.49 + x2 = 8.2 + 0.49

Reorder the terms:
0.49 + 1.4x + x2 = 8.2 + 0.49

Combine like terms: 8.2 + 0.49 = 8.69
0.49 + 1.4x + x2 = 8.69

Factor a perfect square on the left side:
(x + 0.7)(x + 0.7) = 8.69

Calculate the square root of the right side: 2.947880595

Break this problem into two subproblems by setting 
(x + 0.7) equal to 2.947880595 and -2.947880595.

Subproblem 1

x + 0.7 = 2.947880595 Simplifying x + 0.7 = 2.947880595 Reorder the terms: 0.7 + x = 2.947880595 Solving 0.7 + x = 2.947880595 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7' to each side of the equation. 0.7 + -0.7 + x = 2.947880595 + -0.7 Combine like terms: 0.7 + -0.7 = 0.0 0.0 + x = 2.947880595 + -0.7 x = 2.947880595 + -0.7 Combine like terms: 2.947880595 + -0.7 = 2.247880595 x = 2.247880595 Simplifying x = 2.247880595

Subproblem 2

x + 0.7 = -2.947880595 Simplifying x + 0.7 = -2.947880595 Reorder the terms: 0.7 + x = -2.947880595 Solving 0.7 + x = -2.947880595 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7' to each side of the equation. 0.7 + -0.7 + x = -2.947880595 + -0.7 Combine like terms: 0.7 + -0.7 = 0.0 0.0 + x = -2.947880595 + -0.7 x = -2.947880595 + -0.7 Combine like terms: -2.947880595 + -0.7 = -3.647880595 x = -3.647880595 Simplifying x = -3.647880595

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.247880595, -3.647880595}

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