185=-16x^2+131x+50

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Solution for 185=-16x^2+131x+50 equation:


Simplifying
185 = -16x2 + 131x + 50

Reorder the terms:
185 = 50 + 131x + -16x2

Solving
185 = 50 + 131x + -16x2

Solving for variable 'x'.

Combine like terms: 185 + -50 = 135
135 + -131x + 16x2 = 50 + 131x + -16x2 + -50 + -131x + 16x2

Reorder the terms:
135 + -131x + 16x2 = 50 + -50 + 131x + -131x + -16x2 + 16x2

Combine like terms: 50 + -50 = 0
135 + -131x + 16x2 = 0 + 131x + -131x + -16x2 + 16x2
135 + -131x + 16x2 = 131x + -131x + -16x2 + 16x2

Combine like terms: 131x + -131x = 0
135 + -131x + 16x2 = 0 + -16x2 + 16x2
135 + -131x + 16x2 = -16x2 + 16x2

Combine like terms: -16x2 + 16x2 = 0
135 + -131x + 16x2 = 0

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

Divide each side by '16'.
8.4375 + -8.1875x + x2 = 0

Move the constant term to the right:

Add '-8.4375' to each side of the equation.
8.4375 + -8.1875x + -8.4375 + x2 = 0 + -8.4375

Reorder the terms:
8.4375 + -8.4375 + -8.1875x + x2 = 0 + -8.4375

Combine like terms: 8.4375 + -8.4375 = 0.0000
0.0000 + -8.1875x + x2 = 0 + -8.4375
-8.1875x + x2 = 0 + -8.4375

Combine like terms: 0 + -8.4375 = -8.4375
-8.1875x + x2 = -8.4375

The x term is -8.1875x.  Take half its coefficient (-4.09375).
Square it (16.75878906) and add it to both sides.

Add '16.75878906' to each side of the equation.
-8.1875x + 16.75878906 + x2 = -8.4375 + 16.75878906

Reorder the terms:
16.75878906 + -8.1875x + x2 = -8.4375 + 16.75878906

Combine like terms: -8.4375 + 16.75878906 = 8.32128906
16.75878906 + -8.1875x + x2 = 8.32128906

Factor a perfect square on the left side:
(x + -4.09375)(x + -4.09375) = 8.32128906

Calculate the square root of the right side: 2.884664462

Break this problem into two subproblems by setting 
(x + -4.09375) equal to 2.884664462 and -2.884664462.

Subproblem 1

x + -4.09375 = 2.884664462 Simplifying x + -4.09375 = 2.884664462 Reorder the terms: -4.09375 + x = 2.884664462 Solving -4.09375 + x = 2.884664462 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.09375' to each side of the equation. -4.09375 + 4.09375 + x = 2.884664462 + 4.09375 Combine like terms: -4.09375 + 4.09375 = 0.00000 0.00000 + x = 2.884664462 + 4.09375 x = 2.884664462 + 4.09375 Combine like terms: 2.884664462 + 4.09375 = 6.978414462 x = 6.978414462 Simplifying x = 6.978414462

Subproblem 2

x + -4.09375 = -2.884664462 Simplifying x + -4.09375 = -2.884664462 Reorder the terms: -4.09375 + x = -2.884664462 Solving -4.09375 + x = -2.884664462 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.09375' to each side of the equation. -4.09375 + 4.09375 + x = -2.884664462 + 4.09375 Combine like terms: -4.09375 + 4.09375 = 0.00000 0.00000 + x = -2.884664462 + 4.09375 x = -2.884664462 + 4.09375 Combine like terms: -2.884664462 + 4.09375 = 1.209085538 x = 1.209085538 Simplifying x = 1.209085538

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.978414462, 1.209085538}

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