5x^2+8x+11=

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Solution for 5x^2+8x+11= equation:


Simplifying
5x2 + 8x + 11 = 0

Reorder the terms:
11 + 8x + 5x2 = 0

Solving
11 + 8x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
2.2 + 1.6x + x2 = 0

Move the constant term to the right:

Add '-2.2' to each side of the equation.
2.2 + 1.6x + -2.2 + x2 = 0 + -2.2

Reorder the terms:
2.2 + -2.2 + 1.6x + x2 = 0 + -2.2

Combine like terms: 2.2 + -2.2 = 0.0
0.0 + 1.6x + x2 = 0 + -2.2
1.6x + x2 = 0 + -2.2

Combine like terms: 0 + -2.2 = -2.2
1.6x + x2 = -2.2

The x term is 1.6x.  Take half its coefficient (0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
1.6x + 0.64 + x2 = -2.2 + 0.64

Reorder the terms:
0.64 + 1.6x + x2 = -2.2 + 0.64

Combine like terms: -2.2 + 0.64 = -1.56
0.64 + 1.6x + x2 = -1.56

Factor a perfect square on the left side:
(x + 0.8)(x + 0.8) = -1.56

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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