2x(8x^2+5x+7)=0

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Solution for 2x(8x^2+5x+7)=0 equation: 


Simplifying
2x(8x2 + 5x + 7) = 0

Reorder the terms:
2x(7 + 5x + 8x2) = 0
(7 * 2x + 5x * 2x + 8x2 * 2x) = 0
(14x + 10x2 + 16x3) = 0

Solving
14x + 10x2 + 16x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2x'.
2x(7 + 5x + 8x2) = 0

Ignore the factor 2.

Subproblem 1
Set the factor 'x' equal to zero and attempt to solve:

Simplifying
x = 0

Solving
x = 0

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

Simplifying
x = 0

Subproblem 2
Set the factor '(7 + 5x + 8x2)' equal to zero and attempt to solve:

Simplifying
7 + 5x + 8x2 = 0

Solving
7 + 5x + 8x2 = 0

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

Divide each side by '8'.
0.875 + 0.625x + x2 = 0

Move the constant term to the right:

Add '-0.875' to each side of the equation.
0.875 + 0.625x + -0.875 + x2 = 0 + -0.875

Reorder the terms:
0.875 + -0.875 + 0.625x + x2 = 0 + -0.875

Combine like terms: 0.875 + -0.875 = 0.000
0.000 + 0.625x + x2 = 0 + -0.875
0.625x + x2 = 0 + -0.875

Combine like terms: 0 + -0.875 = -0.875
0.625x + x2 = -0.875

The x term is 0.625x.  Take half its coefficient (0.3125).
Square it (0.09765625) and add it to both sides.

Add '0.09765625' to each side of the equation.
0.625x + 0.09765625 + x2 = -0.875 + 0.09765625

Reorder the terms:
0.09765625 + 0.625x + x2 = -0.875 + 0.09765625

Combine like terms: -0.875 + 0.09765625 = -0.77734375
0.09765625 + 0.625x + x2 = -0.77734375

Factor a perfect square on the left side:
(x + 0.3125)(x + 0.3125) = -0.77734375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
x = {0}

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