5x^2+8x=-19

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Solution for 5x^2+8x=-19 equation:


Simplifying
5x2 + 8x = -19

Reorder the terms:
8x + 5x2 = -19

Solving
8x + 5x2 = -19

Solving for variable 'x'.

Reorder the terms:
19 + 8x + 5x2 = -19 + 19

Combine like terms: -19 + 19 = 0
19 + 8x + 5x2 = 0

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

Divide each side by '5'.
3.8 + 1.6x + x2 = 0

Move the constant term to the right:

Add '-3.8' to each side of the equation.
3.8 + 1.6x + -3.8 + x2 = 0 + -3.8

Reorder the terms:
3.8 + -3.8 + 1.6x + x2 = 0 + -3.8

Combine like terms: 3.8 + -3.8 = 0.0
0.0 + 1.6x + x2 = 0 + -3.8
1.6x + x2 = 0 + -3.8

Combine like terms: 0 + -3.8 = -3.8
1.6x + x2 = -3.8

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 = -3.8 + 0.64

Reorder the terms:
0.64 + 1.6x + x2 = -3.8 + 0.64

Combine like terms: -3.8 + 0.64 = -3.16
0.64 + 1.6x + x2 = -3.16

Factor a perfect square on the left side:
(x + 0.8)(x + 0.8) = -3.16

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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