-16x^2+15x+50=0

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Solution for -16x^2+15x+50=0 equation:


Simplifying
-16x2 + 15x + 50 = 0

Reorder the terms:
50 + 15x + -16x2 = 0

Solving
50 + 15x + -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'.
-3.125 + -0.9375x + x2 = 0

Move the constant term to the right:

Add '3.125' to each side of the equation.
-3.125 + -0.9375x + 3.125 + x2 = 0 + 3.125

Reorder the terms:
-3.125 + 3.125 + -0.9375x + x2 = 0 + 3.125

Combine like terms: -3.125 + 3.125 = 0.000
0.000 + -0.9375x + x2 = 0 + 3.125
-0.9375x + x2 = 0 + 3.125

Combine like terms: 0 + 3.125 = 3.125
-0.9375x + x2 = 3.125

The x term is -0.9375x.  Take half its coefficient (-0.46875).
Square it (0.2197265625) and add it to both sides.

Add '0.2197265625' to each side of the equation.
-0.9375x + 0.2197265625 + x2 = 3.125 + 0.2197265625

Reorder the terms:
0.2197265625 + -0.9375x + x2 = 3.125 + 0.2197265625

Combine like terms: 3.125 + 0.2197265625 = 3.3447265625
0.2197265625 + -0.9375x + x2 = 3.3447265625

Factor a perfect square on the left side:
(x + -0.46875)(x + -0.46875) = 3.3447265625

Calculate the square root of the right side: 1.828859361

Break this problem into two subproblems by setting 
(x + -0.46875) equal to 1.828859361 and -1.828859361.

Subproblem 1

x + -0.46875 = 1.828859361 Simplifying x + -0.46875 = 1.828859361 Reorder the terms: -0.46875 + x = 1.828859361 Solving -0.46875 + x = 1.828859361 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.46875' to each side of the equation. -0.46875 + 0.46875 + x = 1.828859361 + 0.46875 Combine like terms: -0.46875 + 0.46875 = 0.00000 0.00000 + x = 1.828859361 + 0.46875 x = 1.828859361 + 0.46875 Combine like terms: 1.828859361 + 0.46875 = 2.297609361 x = 2.297609361 Simplifying x = 2.297609361

Subproblem 2

x + -0.46875 = -1.828859361 Simplifying x + -0.46875 = -1.828859361 Reorder the terms: -0.46875 + x = -1.828859361 Solving -0.46875 + x = -1.828859361 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.46875' to each side of the equation. -0.46875 + 0.46875 + x = -1.828859361 + 0.46875 Combine like terms: -0.46875 + 0.46875 = 0.00000 0.00000 + x = -1.828859361 + 0.46875 x = -1.828859361 + 0.46875 Combine like terms: -1.828859361 + 0.46875 = -1.360109361 x = -1.360109361 Simplifying x = -1.360109361

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.297609361, -1.360109361}

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