x=-16x^2+64x+192

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Solution for x=-16x^2+64x+192 equation:


Simplifying
x = -16x2 + 64x + 192

Reorder the terms:
x = 192 + 64x + -16x2

Solving
x = 192 + 64x + -16x2

Solving for variable 'x'.

Reorder the terms:
-192 + x + -64x + 16x2 = 192 + 64x + -16x2 + -192 + -64x + 16x2

Combine like terms: x + -64x = -63x
-192 + -63x + 16x2 = 192 + 64x + -16x2 + -192 + -64x + 16x2

Reorder the terms:
-192 + -63x + 16x2 = 192 + -192 + 64x + -64x + -16x2 + 16x2

Combine like terms: 192 + -192 = 0
-192 + -63x + 16x2 = 0 + 64x + -64x + -16x2 + 16x2
-192 + -63x + 16x2 = 64x + -64x + -16x2 + 16x2

Combine like terms: 64x + -64x = 0
-192 + -63x + 16x2 = 0 + -16x2 + 16x2
-192 + -63x + 16x2 = -16x2 + 16x2

Combine like terms: -16x2 + 16x2 = 0
-192 + -63x + 16x2 = 0

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

Divide each side by '16'.
-12 + -3.9375x + x2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + -3.9375x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + -3.9375x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -3.9375x + x2 = 0 + 12
-3.9375x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
-3.9375x + x2 = 12

The x term is -3.9375x.  Take half its coefficient (-1.96875).
Square it (3.875976563) and add it to both sides.

Add '3.875976563' to each side of the equation.
-3.9375x + 3.875976563 + x2 = 12 + 3.875976563

Reorder the terms:
3.875976563 + -3.9375x + x2 = 12 + 3.875976563

Combine like terms: 12 + 3.875976563 = 15.875976563
3.875976563 + -3.9375x + x2 = 15.875976563

Factor a perfect square on the left side:
(x + -1.96875)(x + -1.96875) = 15.875976563

Calculate the square root of the right side: 3.984466911

Break this problem into two subproblems by setting 
(x + -1.96875) equal to 3.984466911 and -3.984466911.

Subproblem 1

x + -1.96875 = 3.984466911 Simplifying x + -1.96875 = 3.984466911 Reorder the terms: -1.96875 + x = 3.984466911 Solving -1.96875 + x = 3.984466911 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.96875' to each side of the equation. -1.96875 + 1.96875 + x = 3.984466911 + 1.96875 Combine like terms: -1.96875 + 1.96875 = 0.00000 0.00000 + x = 3.984466911 + 1.96875 x = 3.984466911 + 1.96875 Combine like terms: 3.984466911 + 1.96875 = 5.953216911 x = 5.953216911 Simplifying x = 5.953216911

Subproblem 2

x + -1.96875 = -3.984466911 Simplifying x + -1.96875 = -3.984466911 Reorder the terms: -1.96875 + x = -3.984466911 Solving -1.96875 + x = -3.984466911 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.96875' to each side of the equation. -1.96875 + 1.96875 + x = -3.984466911 + 1.96875 Combine like terms: -1.96875 + 1.96875 = 0.00000 0.00000 + x = -3.984466911 + 1.96875 x = -3.984466911 + 1.96875 Combine like terms: -3.984466911 + 1.96875 = -2.015716911 x = -2.015716911 Simplifying x = -2.015716911

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.953216911, -2.015716911}

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