-16x^2-43x+242=0

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Solution for -16x^2-43x+242=0 equation:


Simplifying
-16x2 + -43x + 242 = 0

Reorder the terms:
242 + -43x + -16x2 = 0

Solving
242 + -43x + -16x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-15.125 + 2.6875x + x2 = 0

Move the constant term to the right:

Add '15.125' to each side of the equation.
-15.125 + 2.6875x + 15.125 + x2 = 0 + 15.125

Reorder the terms:
-15.125 + 15.125 + 2.6875x + x2 = 0 + 15.125

Combine like terms: -15.125 + 15.125 = 0.000
0.000 + 2.6875x + x2 = 0 + 15.125
2.6875x + x2 = 0 + 15.125

Combine like terms: 0 + 15.125 = 15.125
2.6875x + x2 = 15.125

The x term is 2.6875x.  Take half its coefficient (1.34375).
Square it (1.805664063) and add it to both sides.

Add '1.805664063' to each side of the equation.
2.6875x + 1.805664063 + x2 = 15.125 + 1.805664063

Reorder the terms:
1.805664063 + 2.6875x + x2 = 15.125 + 1.805664063

Combine like terms: 15.125 + 1.805664063 = 16.930664063
1.805664063 + 2.6875x + x2 = 16.930664063

Factor a perfect square on the left side:
(x + 1.34375)(x + 1.34375) = 16.930664063

Calculate the square root of the right side: 4.114688817

Break this problem into two subproblems by setting 
(x + 1.34375) equal to 4.114688817 and -4.114688817.

Subproblem 1

x + 1.34375 = 4.114688817 Simplifying x + 1.34375 = 4.114688817 Reorder the terms: 1.34375 + x = 4.114688817 Solving 1.34375 + x = 4.114688817 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.34375' to each side of the equation. 1.34375 + -1.34375 + x = 4.114688817 + -1.34375 Combine like terms: 1.34375 + -1.34375 = 0.00000 0.00000 + x = 4.114688817 + -1.34375 x = 4.114688817 + -1.34375 Combine like terms: 4.114688817 + -1.34375 = 2.770938817 x = 2.770938817 Simplifying x = 2.770938817

Subproblem 2

x + 1.34375 = -4.114688817 Simplifying x + 1.34375 = -4.114688817 Reorder the terms: 1.34375 + x = -4.114688817 Solving 1.34375 + x = -4.114688817 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.34375' to each side of the equation. 1.34375 + -1.34375 + x = -4.114688817 + -1.34375 Combine like terms: 1.34375 + -1.34375 = 0.00000 0.00000 + x = -4.114688817 + -1.34375 x = -4.114688817 + -1.34375 Combine like terms: -4.114688817 + -1.34375 = -5.458438817 x = -5.458438817 Simplifying x = -5.458438817

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.770938817, -5.458438817}

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