7.13x^2+102.76x+291.3792=0

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Solution for 7.13x^2+102.76x+291.3792=0 equation:


Simplifying
7.13x2 + 102.76x + 291.3792 = 0

Reorder the terms:
291.3792 + 102.76x + 7.13x2 = 0

Solving
291.3792 + 102.76x + 7.13x2 = 0

Solving for variable 'x'.

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

Divide each side by '7.13'.
40.86664797 + 14.41234222x + x2 = 0

Move the constant term to the right:

Add '-40.86664797' to each side of the equation.
40.86664797 + 14.41234222x + -40.86664797 + x2 = 0 + -40.86664797

Reorder the terms:
40.86664797 + -40.86664797 + 14.41234222x + x2 = 0 + -40.86664797

Combine like terms: 40.86664797 + -40.86664797 = 0.00000000
0.00000000 + 14.41234222x + x2 = 0 + -40.86664797
14.41234222x + x2 = 0 + -40.86664797

Combine like terms: 0 + -40.86664797 = -40.86664797
14.41234222x + x2 = -40.86664797

The x term is 14.41234222x.  Take half its coefficient (7.20617111).
Square it (51.92890207) and add it to both sides.

Add '51.92890207' to each side of the equation.
14.41234222x + 51.92890207 + x2 = -40.86664797 + 51.92890207

Reorder the terms:
51.92890207 + 14.41234222x + x2 = -40.86664797 + 51.92890207

Combine like terms: -40.86664797 + 51.92890207 = 11.0622541
51.92890207 + 14.41234222x + x2 = 11.0622541

Factor a perfect square on the left side:
(x + 7.20617111)(x + 7.20617111) = 11.0622541

Calculate the square root of the right side: 3.325996708

Break this problem into two subproblems by setting 
(x + 7.20617111) equal to 3.325996708 and -3.325996708.

Subproblem 1

x + 7.20617111 = 3.325996708 Simplifying x + 7.20617111 = 3.325996708 Reorder the terms: 7.20617111 + x = 3.325996708 Solving 7.20617111 + x = 3.325996708 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.20617111' to each side of the equation. 7.20617111 + -7.20617111 + x = 3.325996708 + -7.20617111 Combine like terms: 7.20617111 + -7.20617111 = 0.00000000 0.00000000 + x = 3.325996708 + -7.20617111 x = 3.325996708 + -7.20617111 Combine like terms: 3.325996708 + -7.20617111 = -3.880174402 x = -3.880174402 Simplifying x = -3.880174402

Subproblem 2

x + 7.20617111 = -3.325996708 Simplifying x + 7.20617111 = -3.325996708 Reorder the terms: 7.20617111 + x = -3.325996708 Solving 7.20617111 + x = -3.325996708 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.20617111' to each side of the equation. 7.20617111 + -7.20617111 + x = -3.325996708 + -7.20617111 Combine like terms: 7.20617111 + -7.20617111 = 0.00000000 0.00000000 + x = -3.325996708 + -7.20617111 x = -3.325996708 + -7.20617111 Combine like terms: -3.325996708 + -7.20617111 = -10.532167818 x = -10.532167818 Simplifying x = -10.532167818

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-3.880174402, -10.532167818}

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