-4.9x^2+23.5x+3=0

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Solution for -4.9x^2+23.5x+3=0 equation:


Simplifying
-4.9x2 + 23.5x + 3 = 0

Reorder the terms:
3 + 23.5x + -4.9x2 = 0

Solving
3 + 23.5x + -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'.
-0.612244898 + -4.795918367x + x2 = 0

Move the constant term to the right:

Add '0.612244898' to each side of the equation.
-0.612244898 + -4.795918367x + 0.612244898 + x2 = 0 + 0.612244898

Reorder the terms:
-0.612244898 + 0.612244898 + -4.795918367x + x2 = 0 + 0.612244898

Combine like terms: -0.612244898 + 0.612244898 = 0.000000000
0.000000000 + -4.795918367x + x2 = 0 + 0.612244898
-4.795918367x + x2 = 0 + 0.612244898

Combine like terms: 0 + 0.612244898 = 0.612244898
-4.795918367x + x2 = 0.612244898

The x term is -4.795918367x.  Take half its coefficient (-2.397959184).
Square it (5.750208248) and add it to both sides.

Add '5.750208248' to each side of the equation.
-4.795918367x + 5.750208248 + x2 = 0.612244898 + 5.750208248

Reorder the terms:
5.750208248 + -4.795918367x + x2 = 0.612244898 + 5.750208248

Combine like terms: 0.612244898 + 5.750208248 = 6.362453146
5.750208248 + -4.795918367x + x2 = 6.362453146

Factor a perfect square on the left side:
(x + -2.397959184)(x + -2.397959184) = 6.362453146

Calculate the square root of the right side: 2.522390364

Break this problem into two subproblems by setting 
(x + -2.397959184) equal to 2.522390364 and -2.522390364.

Subproblem 1

x + -2.397959184 = 2.522390364 Simplifying x + -2.397959184 = 2.522390364 Reorder the terms: -2.397959184 + x = 2.522390364 Solving -2.397959184 + x = 2.522390364 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.397959184' to each side of the equation. -2.397959184 + 2.397959184 + x = 2.522390364 + 2.397959184 Combine like terms: -2.397959184 + 2.397959184 = 0.000000000 0.000000000 + x = 2.522390364 + 2.397959184 x = 2.522390364 + 2.397959184 Combine like terms: 2.522390364 + 2.397959184 = 4.920349548 x = 4.920349548 Simplifying x = 4.920349548

Subproblem 2

x + -2.397959184 = -2.522390364 Simplifying x + -2.397959184 = -2.522390364 Reorder the terms: -2.397959184 + x = -2.522390364 Solving -2.397959184 + x = -2.522390364 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.397959184' to each side of the equation. -2.397959184 + 2.397959184 + x = -2.522390364 + 2.397959184 Combine like terms: -2.397959184 + 2.397959184 = 0.000000000 0.000000000 + x = -2.522390364 + 2.397959184 x = -2.522390364 + 2.397959184 Combine like terms: -2.522390364 + 2.397959184 = -0.12443118 x = -0.12443118 Simplifying x = -0.12443118

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.920349548, -0.12443118}

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