4.905x^2-23x-6=0

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Solution for 4.905x^2-23x-6=0 equation:


Simplifying
4.905x2 + -23x + -6 = 0

Reorder the terms:
-6 + -23x + 4.905x2 = 0

Solving
-6 + -23x + 4.905x2 = 0

Solving for variable 'x'.

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

Divide each side by '4.905'.
-1.22324159 + -4.689092762x + x2 = 0

Move the constant term to the right:

Add '1.22324159' to each side of the equation.
-1.22324159 + -4.689092762x + 1.22324159 + x2 = 0 + 1.22324159

Reorder the terms:
-1.22324159 + 1.22324159 + -4.689092762x + x2 = 0 + 1.22324159

Combine like terms: -1.22324159 + 1.22324159 = 0.00000000
0.00000000 + -4.689092762x + x2 = 0 + 1.22324159
-4.689092762x + x2 = 0 + 1.22324159

Combine like terms: 0 + 1.22324159 = 1.22324159
-4.689092762x + x2 = 1.22324159

The x term is -4.689092762x.  Take half its coefficient (-2.344546381).
Square it (5.496897733) and add it to both sides.

Add '5.496897733' to each side of the equation.
-4.689092762x + 5.496897733 + x2 = 1.22324159 + 5.496897733

Reorder the terms:
5.496897733 + -4.689092762x + x2 = 1.22324159 + 5.496897733

Combine like terms: 1.22324159 + 5.496897733 = 6.720139323
5.496897733 + -4.689092762x + x2 = 6.720139323

Factor a perfect square on the left side:
(x + -2.344546381)(x + -2.344546381) = 6.720139323

Calculate the square root of the right side: 2.592323152

Break this problem into two subproblems by setting 
(x + -2.344546381) equal to 2.592323152 and -2.592323152.

Subproblem 1

x + -2.344546381 = 2.592323152 Simplifying x + -2.344546381 = 2.592323152 Reorder the terms: -2.344546381 + x = 2.592323152 Solving -2.344546381 + x = 2.592323152 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.344546381' to each side of the equation. -2.344546381 + 2.344546381 + x = 2.592323152 + 2.344546381 Combine like terms: -2.344546381 + 2.344546381 = 0.000000000 0.000000000 + x = 2.592323152 + 2.344546381 x = 2.592323152 + 2.344546381 Combine like terms: 2.592323152 + 2.344546381 = 4.936869533 x = 4.936869533 Simplifying x = 4.936869533

Subproblem 2

x + -2.344546381 = -2.592323152 Simplifying x + -2.344546381 = -2.592323152 Reorder the terms: -2.344546381 + x = -2.592323152 Solving -2.344546381 + x = -2.592323152 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.344546381' to each side of the equation. -2.344546381 + 2.344546381 + x = -2.592323152 + 2.344546381 Combine like terms: -2.344546381 + 2.344546381 = 0.000000000 0.000000000 + x = -2.592323152 + 2.344546381 x = -2.592323152 + 2.344546381 Combine like terms: -2.592323152 + 2.344546381 = -0.247776771 x = -0.247776771 Simplifying x = -0.247776771

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.936869533, -0.247776771}

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