-16x^2+24x+40=8

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Solution for -16x^2+24x+40=8 equation: 


Simplifying
-16x2 + 24x + 40 = 8

Reorder the terms:
40 + 24x + -16x2 = 8

Solving
40 + 24x + -16x2 = 8

Solving for variable 'x'.

Reorder the terms:
40 + -8 + 24x + -16x2 = 8 + -8

Combine like terms: 40 + -8 = 32
32 + 24x + -16x2 = 8 + -8

Combine like terms: 8 + -8 = 0
32 + 24x + -16x2 = 0

Factor out the Greatest Common Factor (GCF), '8'.
8(4 + 3x + -2x2) = 0

Ignore the factor 8.

Subproblem 1
Set the factor '(4 + 3x + -2x2)' equal to zero and attempt to solve:

Simplifying
4 + 3x + -2x2 = 0

Solving
4 + 3x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-2 + -1.5x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -1.5x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + -1.5x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -1.5x + x2 = 0 + 2
-1.5x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
-1.5x + x2 = 2

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 2 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 2 + 0.5625

Combine like terms: 2 + 0.5625 = 2.5625
0.5625 + -1.5x + x2 = 2.5625

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 2.5625

Calculate the square root of the right side: 1.600781059

Break this problem into two subproblems by setting 
(x + -0.75) equal to 1.600781059 and -1.600781059.


Subproblem 1
x + -0.75 = 1.600781059

Simplifying
x + -0.75 = 1.600781059

Reorder the terms:
-0.75 + x = 1.600781059

Solving
-0.75 + x = 1.600781059

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '0.75' to each side of the equation.
-0.75 + 0.75 + x = 1.600781059 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + x = 1.600781059 + 0.75
x = 1.600781059 + 0.75

Combine like terms: 1.600781059 + 0.75 = 2.350781059
x = 2.350781059

Simplifying
x = 2.350781059


Subproblem 2
x + -0.75 = -1.600781059

Simplifying
x + -0.75 = -1.600781059

Reorder the terms:
-0.75 + x = -1.600781059

Solving
-0.75 + x = -1.600781059

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '0.75' to each side of the equation.
-0.75 + 0.75 + x = -1.600781059 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + x = -1.600781059 + 0.75
x = -1.600781059 + 0.75

Combine like terms: -1.600781059 + 0.75 = -0.850781059
x = -0.850781059

Simplifying
x = -0.850781059


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {2.350781059, -0.850781059}
Solution
x = {2.350781059, -0.850781059}

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