5x^2+4x=-3

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Solution for 5x^2+4x=-3 equation:


Simplifying
5x2 + 4x = -3

Reorder the terms:
4x + 5x2 = -3

Solving
4x + 5x2 = -3

Solving for variable 'x'.

Reorder the terms:
3 + 4x + 5x2 = -3 + 3

Combine like terms: -3 + 3 = 0
3 + 4x + 5x2 = 0

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

Divide each side by '5'.
0.6 + 0.8x + x2 = 0

Move the constant term to the right:

Add '-0.6' to each side of the equation.
0.6 + 0.8x + -0.6 + x2 = 0 + -0.6

Reorder the terms:
0.6 + -0.6 + 0.8x + x2 = 0 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + 0.8x + x2 = 0 + -0.6
0.8x + x2 = 0 + -0.6

Combine like terms: 0 + -0.6 = -0.6
0.8x + x2 = -0.6

The x term is 0.8x.  Take half its coefficient (0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
0.8x + 0.16 + x2 = -0.6 + 0.16

Reorder the terms:
0.16 + 0.8x + x2 = -0.6 + 0.16

Combine like terms: -0.6 + 0.16 = -0.44
0.16 + 0.8x + x2 = -0.44

Factor a perfect square on the left side:
(x + 0.4)(x + 0.4) = -0.44

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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