5x^2+41x-54=0

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Solution for 5x^2+41x-54=0 equation:


Simplifying
5x2 + 41x + -54 = 0

Reorder the terms:
-54 + 41x + 5x2 = 0

Solving
-54 + 41x + 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'.
-10.8 + 8.2x + x2 = 0

Move the constant term to the right:

Add '10.8' to each side of the equation.
-10.8 + 8.2x + 10.8 + x2 = 0 + 10.8

Reorder the terms:
-10.8 + 10.8 + 8.2x + x2 = 0 + 10.8

Combine like terms: -10.8 + 10.8 = 0.0
0.0 + 8.2x + x2 = 0 + 10.8
8.2x + x2 = 0 + 10.8

Combine like terms: 0 + 10.8 = 10.8
8.2x + x2 = 10.8

The x term is 8.2x.  Take half its coefficient (4.1).
Square it (16.81) and add it to both sides.

Add '16.81' to each side of the equation.
8.2x + 16.81 + x2 = 10.8 + 16.81

Reorder the terms:
16.81 + 8.2x + x2 = 10.8 + 16.81

Combine like terms: 10.8 + 16.81 = 27.61
16.81 + 8.2x + x2 = 27.61

Factor a perfect square on the left side:
(x + 4.1)(x + 4.1) = 27.61

Calculate the square root of the right side: 5.254521862

Break this problem into two subproblems by setting 
(x + 4.1) equal to 5.254521862 and -5.254521862.

Subproblem 1

x + 4.1 = 5.254521862 Simplifying x + 4.1 = 5.254521862 Reorder the terms: 4.1 + x = 5.254521862 Solving 4.1 + x = 5.254521862 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.1' to each side of the equation. 4.1 + -4.1 + x = 5.254521862 + -4.1 Combine like terms: 4.1 + -4.1 = 0.0 0.0 + x = 5.254521862 + -4.1 x = 5.254521862 + -4.1 Combine like terms: 5.254521862 + -4.1 = 1.154521862 x = 1.154521862 Simplifying x = 1.154521862

Subproblem 2

x + 4.1 = -5.254521862 Simplifying x + 4.1 = -5.254521862 Reorder the terms: 4.1 + x = -5.254521862 Solving 4.1 + x = -5.254521862 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.1' to each side of the equation. 4.1 + -4.1 + x = -5.254521862 + -4.1 Combine like terms: 4.1 + -4.1 = 0.0 0.0 + x = -5.254521862 + -4.1 x = -5.254521862 + -4.1 Combine like terms: -5.254521862 + -4.1 = -9.354521862 x = -9.354521862 Simplifying x = -9.354521862

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.154521862, -9.354521862}

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