5x^2+8x+300=0

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Solution for 5x^2+8x+300=0 equation:


Simplifying
5x2 + 8x + 300 = 0

Reorder the terms:
300 + 8x + 5x2 = 0

Solving
300 + 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'.
60 + 1.6x + x2 = 0

Move the constant term to the right:

Add '-60' to each side of the equation.
60 + 1.6x + -60 + x2 = 0 + -60

Reorder the terms:
60 + -60 + 1.6x + x2 = 0 + -60

Combine like terms: 60 + -60 = 0
0 + 1.6x + x2 = 0 + -60
1.6x + x2 = 0 + -60

Combine like terms: 0 + -60 = -60
1.6x + x2 = -60

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 = -60 + 0.64

Reorder the terms:
0.64 + 1.6x + x2 = -60 + 0.64

Combine like terms: -60 + 0.64 = -59.36
0.64 + 1.6x + x2 = -59.36

Factor a perfect square on the left side:
(x + 0.8)(x + 0.8) = -59.36

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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