-16X^2+64X+5=0

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Solution for -16X^2+64X+5=0 equation:


Simplifying
-16X2 + 64X + 5 = 0

Reorder the terms:
5 + 64X + -16X2 = 0

Solving
5 + 64X + -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'.
-0.3125 + -4X + X2 = 0

Move the constant term to the right:

Add '0.3125' to each side of the equation.
-0.3125 + -4X + 0.3125 + X2 = 0 + 0.3125

Reorder the terms:
-0.3125 + 0.3125 + -4X + X2 = 0 + 0.3125

Combine like terms: -0.3125 + 0.3125 = 0.0000
0.0000 + -4X + X2 = 0 + 0.3125
-4X + X2 = 0 + 0.3125

Combine like terms: 0 + 0.3125 = 0.3125
-4X + X2 = 0.3125

The X term is -4X.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4X + 4 + X2 = 0.3125 + 4

Reorder the terms:
4 + -4X + X2 = 0.3125 + 4

Combine like terms: 0.3125 + 4 = 4.3125
4 + -4X + X2 = 4.3125

Factor a perfect square on the left side:
(X + -2)(X + -2) = 4.3125

Calculate the square root of the right side: 2.076655966

Break this problem into two subproblems by setting 
(X + -2) equal to 2.076655966 and -2.076655966.

Subproblem 1

X + -2 = 2.076655966 Simplifying X + -2 = 2.076655966 Reorder the terms: -2 + X = 2.076655966 Solving -2 + X = 2.076655966 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + X = 2.076655966 + 2 Combine like terms: -2 + 2 = 0 0 + X = 2.076655966 + 2 X = 2.076655966 + 2 Combine like terms: 2.076655966 + 2 = 4.076655966 X = 4.076655966 Simplifying X = 4.076655966

Subproblem 2

X + -2 = -2.076655966 Simplifying X + -2 = -2.076655966 Reorder the terms: -2 + X = -2.076655966 Solving -2 + X = -2.076655966 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + X = -2.076655966 + 2 Combine like terms: -2 + 2 = 0 0 + X = -2.076655966 + 2 X = -2.076655966 + 2 Combine like terms: -2.076655966 + 2 = -0.076655966 X = -0.076655966 Simplifying X = -0.076655966

Solution

The solution to the problem is based on the solutions from the subproblems. X = {4.076655966, -0.076655966}

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