-4.9x^2+11x+500=0

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Solution for -4.9x^2+11x+500=0 equation:


Simplifying
-4.9x2 + 11x + 500 = 0

Reorder the terms:
500 + 11x + -4.9x2 = 0

Solving
500 + 11x + -4.9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4.9 the coefficient of the squared term: 

Divide each side by '-4.9'.
-102.0408163 + -2.244897959x + x2 = 0

Move the constant term to the right:

Add '102.0408163' to each side of the equation.
-102.0408163 + -2.244897959x + 102.0408163 + x2 = 0 + 102.0408163

Reorder the terms:
-102.0408163 + 102.0408163 + -2.244897959x + x2 = 0 + 102.0408163

Combine like terms: -102.0408163 + 102.0408163 = 0.0000000
0.0000000 + -2.244897959x + x2 = 0 + 102.0408163
-2.244897959x + x2 = 0 + 102.0408163

Combine like terms: 0 + 102.0408163 = 102.0408163
-2.244897959x + x2 = 102.0408163

The x term is -2.244897959x.  Take half its coefficient (-1.12244898).
Square it (1.259891713) and add it to both sides.

Add '1.259891713' to each side of the equation.
-2.244897959x + 1.259891713 + x2 = 102.0408163 + 1.259891713

Reorder the terms:
1.259891713 + -2.244897959x + x2 = 102.0408163 + 1.259891713

Combine like terms: 102.0408163 + 1.259891713 = 103.300708013
1.259891713 + -2.244897959x + x2 = 103.300708013

Factor a perfect square on the left side:
(x + -1.12244898)(x + -1.12244898) = 103.300708013

Calculate the square root of the right side: 10.163695588

Break this problem into two subproblems by setting 
(x + -1.12244898) equal to 10.163695588 and -10.163695588.

Subproblem 1

x + -1.12244898 = 10.163695588 Simplifying x + -1.12244898 = 10.163695588 Reorder the terms: -1.12244898 + x = 10.163695588 Solving -1.12244898 + x = 10.163695588 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.12244898' to each side of the equation. -1.12244898 + 1.12244898 + x = 10.163695588 + 1.12244898 Combine like terms: -1.12244898 + 1.12244898 = 0.00000000 0.00000000 + x = 10.163695588 + 1.12244898 x = 10.163695588 + 1.12244898 Combine like terms: 10.163695588 + 1.12244898 = 11.286144568 x = 11.286144568 Simplifying x = 11.286144568

Subproblem 2

x + -1.12244898 = -10.163695588 Simplifying x + -1.12244898 = -10.163695588 Reorder the terms: -1.12244898 + x = -10.163695588 Solving -1.12244898 + x = -10.163695588 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.12244898' to each side of the equation. -1.12244898 + 1.12244898 + x = -10.163695588 + 1.12244898 Combine like terms: -1.12244898 + 1.12244898 = 0.00000000 0.00000000 + x = -10.163695588 + 1.12244898 x = -10.163695588 + 1.12244898 Combine like terms: -10.163695588 + 1.12244898 = -9.041246608 x = -9.041246608 Simplifying x = -9.041246608

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.286144568, -9.041246608}

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