15x^2+8x+16=0

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Solution for 15x^2+8x+16=0 equation:


Simplifying
15x2 + 8x + 16 = 0

Reorder the terms:
16 + 8x + 15x2 = 0

Solving
16 + 8x + 15x2 = 0

Solving for variable 'x'.

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

Divide each side by '15'.
1.066666667 + 0.5333333333x + x2 = 0

Move the constant term to the right:

Add '-1.066666667' to each side of the equation.
1.066666667 + 0.5333333333x + -1.066666667 + x2 = 0 + -1.066666667

Reorder the terms:
1.066666667 + -1.066666667 + 0.5333333333x + x2 = 0 + -1.066666667

Combine like terms: 1.066666667 + -1.066666667 = 0.000000000
0.000000000 + 0.5333333333x + x2 = 0 + -1.066666667
0.5333333333x + x2 = 0 + -1.066666667

Combine like terms: 0 + -1.066666667 = -1.066666667
0.5333333333x + x2 = -1.066666667

The x term is 0.5333333333x.  Take half its coefficient (0.2666666667).
Square it (0.07111111113) and add it to both sides.

Add '0.07111111113' to each side of the equation.
0.5333333333x + 0.07111111113 + x2 = -1.066666667 + 0.07111111113

Reorder the terms:
0.07111111113 + 0.5333333333x + x2 = -1.066666667 + 0.07111111113

Combine like terms: -1.066666667 + 0.07111111113 = -0.99555555587
0.07111111113 + 0.5333333333x + x2 = -0.99555555587

Factor a perfect square on the left side:
(x + 0.2666666667)(x + 0.2666666667) = -0.99555555587

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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