16x^2+48x+81=

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Solution for 16x^2+48x+81= equation:


Simplifying
16x2 + 48x + 81 = 0

Reorder the terms:
81 + 48x + 16x2 = 0

Solving
81 + 48x + 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'.
5.0625 + 3x + x2 = 0

Move the constant term to the right:

Add '-5.0625' to each side of the equation.
5.0625 + 3x + -5.0625 + x2 = 0 + -5.0625

Reorder the terms:
5.0625 + -5.0625 + 3x + x2 = 0 + -5.0625

Combine like terms: 5.0625 + -5.0625 = 0.0000
0.0000 + 3x + x2 = 0 + -5.0625
3x + x2 = 0 + -5.0625

Combine like terms: 0 + -5.0625 = -5.0625
3x + x2 = -5.0625

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = -5.0625 + 2.25

Reorder the terms:
2.25 + 3x + x2 = -5.0625 + 2.25

Combine like terms: -5.0625 + 2.25 = -2.8125
2.25 + 3x + x2 = -2.8125

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = -2.8125

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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