3=-5x^2-5x

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


Simplifying
3 = -5x2 + -5x

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

Solving
3 = -5x + -5x2

Solving for variable 'x'.

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

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

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

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

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

Move the constant term to the right:

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

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

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

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

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = -0.6 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = -0.6 + 0.25

Combine like terms: -0.6 + 0.25 = -0.35
1.25 + x2 = -0.35

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -0.35

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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