108=-5.01x+4.9x^2

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Solution for 108=-5.01x+4.9x^2 equation:


Simplifying
108 = -5.01x + 4.9x2

Solving
108 = -5.01x + 4.9x2

Solving for variable 'x'.

Reorder the terms:
108 + 5.01x + -4.9x2 = -5.01x + 5.01x + 4.9x2 + -4.9x2

Combine like terms: -5.01x + 5.01x = 0.00
108 + 5.01x + -4.9x2 = 0.00 + 4.9x2 + -4.9x2
108 + 5.01x + -4.9x2 = 4.9x2 + -4.9x2

Combine like terms: 4.9x2 + -4.9x2 = 0.0
108 + 5.01x + -4.9x2 = 0.0

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

Divide each side by '-4.9'.
-22.04081633 + -1.02244898x + x2 = 0

Move the constant term to the right:

Add '22.04081633' to each side of the equation.
-22.04081633 + -1.02244898x + 22.04081633 + x2 = 0 + 22.04081633

Reorder the terms:
-22.04081633 + 22.04081633 + -1.02244898x + x2 = 0 + 22.04081633

Combine like terms: -22.04081633 + 22.04081633 = 0.00000000
0.00000000 + -1.02244898x + x2 = 0 + 22.04081633
-1.02244898x + x2 = 0 + 22.04081633

Combine like terms: 0 + 22.04081633 = 22.04081633
-1.02244898x + x2 = 22.04081633

The x term is -1.02244898x.  Take half its coefficient (-0.51122449).
Square it (0.2613504792) and add it to both sides.

Add '0.2613504792' to each side of the equation.
-1.02244898x + 0.2613504792 + x2 = 22.04081633 + 0.2613504792

Reorder the terms:
0.2613504792 + -1.02244898x + x2 = 22.04081633 + 0.2613504792

Combine like terms: 22.04081633 + 0.2613504792 = 22.3021668092
0.2613504792 + -1.02244898x + x2 = 22.3021668092

Factor a perfect square on the left side:
(x + -0.51122449)(x + -0.51122449) = 22.3021668092

Calculate the square root of the right side: 4.722516999

Break this problem into two subproblems by setting 
(x + -0.51122449) equal to 4.722516999 and -4.722516999.

Subproblem 1

x + -0.51122449 = 4.722516999 Simplifying x + -0.51122449 = 4.722516999 Reorder the terms: -0.51122449 + x = 4.722516999 Solving -0.51122449 + x = 4.722516999 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.51122449' to each side of the equation. -0.51122449 + 0.51122449 + x = 4.722516999 + 0.51122449 Combine like terms: -0.51122449 + 0.51122449 = 0.00000000 0.00000000 + x = 4.722516999 + 0.51122449 x = 4.722516999 + 0.51122449 Combine like terms: 4.722516999 + 0.51122449 = 5.233741489 x = 5.233741489 Simplifying x = 5.233741489

Subproblem 2

x + -0.51122449 = -4.722516999 Simplifying x + -0.51122449 = -4.722516999 Reorder the terms: -0.51122449 + x = -4.722516999 Solving -0.51122449 + x = -4.722516999 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.51122449' to each side of the equation. -0.51122449 + 0.51122449 + x = -4.722516999 + 0.51122449 Combine like terms: -0.51122449 + 0.51122449 = 0.00000000 0.00000000 + x = -4.722516999 + 0.51122449 x = -4.722516999 + 0.51122449 Combine like terms: -4.722516999 + 0.51122449 = -4.211292509 x = -4.211292509 Simplifying x = -4.211292509

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.233741489, -4.211292509}

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