-16x^2-37x+20=0

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Solution for -16x^2-37x+20=0 equation:


Simplifying
-16x2 + -37x + 20 = 0

Reorder the terms:
20 + -37x + -16x2 = 0

Solving
20 + -37x + -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'.
-1.25 + 2.3125x + x2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + 2.3125x + 1.25 + x2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + 2.3125x + x2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + 2.3125x + x2 = 0 + 1.25
2.3125x + x2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
2.3125x + x2 = 1.25

The x term is 2.3125x.  Take half its coefficient (1.15625).
Square it (1.336914063) and add it to both sides.

Add '1.336914063' to each side of the equation.
2.3125x + 1.336914063 + x2 = 1.25 + 1.336914063

Reorder the terms:
1.336914063 + 2.3125x + x2 = 1.25 + 1.336914063

Combine like terms: 1.25 + 1.336914063 = 2.586914063
1.336914063 + 2.3125x + x2 = 2.586914063

Factor a perfect square on the left side:
(x + 1.15625)(x + 1.15625) = 2.586914063

Calculate the square root of the right side: 1.608388654

Break this problem into two subproblems by setting 
(x + 1.15625) equal to 1.608388654 and -1.608388654.

Subproblem 1

x + 1.15625 = 1.608388654 Simplifying x + 1.15625 = 1.608388654 Reorder the terms: 1.15625 + x = 1.608388654 Solving 1.15625 + x = 1.608388654 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.15625' to each side of the equation. 1.15625 + -1.15625 + x = 1.608388654 + -1.15625 Combine like terms: 1.15625 + -1.15625 = 0.00000 0.00000 + x = 1.608388654 + -1.15625 x = 1.608388654 + -1.15625 Combine like terms: 1.608388654 + -1.15625 = 0.452138654 x = 0.452138654 Simplifying x = 0.452138654

Subproblem 2

x + 1.15625 = -1.608388654 Simplifying x + 1.15625 = -1.608388654 Reorder the terms: 1.15625 + x = -1.608388654 Solving 1.15625 + x = -1.608388654 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.15625' to each side of the equation. 1.15625 + -1.15625 + x = -1.608388654 + -1.15625 Combine like terms: 1.15625 + -1.15625 = 0.00000 0.00000 + x = -1.608388654 + -1.15625 x = -1.608388654 + -1.15625 Combine like terms: -1.608388654 + -1.15625 = -2.764638654 x = -2.764638654 Simplifying x = -2.764638654

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.452138654, -2.764638654}

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