-16x^2+133x=43.5

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Solution for -16x^2+133x=43.5 equation:


Simplifying
-16x2 + 133x = 43.5

Reorder the terms:
133x + -16x2 = 43.5

Solving
133x + -16x2 = 43.5

Solving for variable 'x'.

Reorder the terms:
-43.5 + 133x + -16x2 = 43.5 + -43.5

Combine like terms: 43.5 + -43.5 = 0.0
-43.5 + 133x + -16x2 = 0.0

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

Divide each side by '-16'.
2.71875 + -8.3125x + x2 = 0.0

Move the constant term to the right:

Add '-2.71875' to each side of the equation.
2.71875 + -8.3125x + -2.71875 + x2 = 0.0 + -2.71875

Reorder the terms:
2.71875 + -2.71875 + -8.3125x + x2 = 0.0 + -2.71875

Combine like terms: 2.71875 + -2.71875 = 0.00000
0.00000 + -8.3125x + x2 = 0.0 + -2.71875
-8.3125x + x2 = 0.0 + -2.71875

Combine like terms: 0.0 + -2.71875 = -2.71875
-8.3125x + x2 = -2.71875

The x term is -8.3125x.  Take half its coefficient (-4.15625).
Square it (17.27441406) and add it to both sides.

Add '17.27441406' to each side of the equation.
-8.3125x + 17.27441406 + x2 = -2.71875 + 17.27441406

Reorder the terms:
17.27441406 + -8.3125x + x2 = -2.71875 + 17.27441406

Combine like terms: -2.71875 + 17.27441406 = 14.55566406
17.27441406 + -8.3125x + x2 = 14.55566406

Factor a perfect square on the left side:
(x + -4.15625)(x + -4.15625) = 14.55566406

Calculate the square root of the right side: 3.815188601

Break this problem into two subproblems by setting 
(x + -4.15625) equal to 3.815188601 and -3.815188601.

Subproblem 1

x + -4.15625 = 3.815188601 Simplifying x + -4.15625 = 3.815188601 Reorder the terms: -4.15625 + x = 3.815188601 Solving -4.15625 + x = 3.815188601 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.15625' to each side of the equation. -4.15625 + 4.15625 + x = 3.815188601 + 4.15625 Combine like terms: -4.15625 + 4.15625 = 0.00000 0.00000 + x = 3.815188601 + 4.15625 x = 3.815188601 + 4.15625 Combine like terms: 3.815188601 + 4.15625 = 7.971438601 x = 7.971438601 Simplifying x = 7.971438601

Subproblem 2

x + -4.15625 = -3.815188601 Simplifying x + -4.15625 = -3.815188601 Reorder the terms: -4.15625 + x = -3.815188601 Solving -4.15625 + x = -3.815188601 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.15625' to each side of the equation. -4.15625 + 4.15625 + x = -3.815188601 + 4.15625 Combine like terms: -4.15625 + 4.15625 = 0.00000 0.00000 + x = -3.815188601 + 4.15625 x = -3.815188601 + 4.15625 Combine like terms: -3.815188601 + 4.15625 = 0.341061399 x = 0.341061399 Simplifying x = 0.341061399

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.971438601, 0.341061399}

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