10x^2+84x+185=0

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Solution for 10x^2+84x+185=0 equation:


Simplifying
10x2 + 84x + 185 = 0

Reorder the terms:
185 + 84x + 10x2 = 0

Solving
185 + 84x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
18.5 + 8.4x + x2 = 0

Move the constant term to the right:

Add '-18.5' to each side of the equation.
18.5 + 8.4x + -18.5 + x2 = 0 + -18.5

Reorder the terms:
18.5 + -18.5 + 8.4x + x2 = 0 + -18.5

Combine like terms: 18.5 + -18.5 = 0.0
0.0 + 8.4x + x2 = 0 + -18.5
8.4x + x2 = 0 + -18.5

Combine like terms: 0 + -18.5 = -18.5
8.4x + x2 = -18.5

The x term is 8.4x.  Take half its coefficient (4.2).
Square it (17.64) and add it to both sides.

Add '17.64' to each side of the equation.
8.4x + 17.64 + x2 = -18.5 + 17.64

Reorder the terms:
17.64 + 8.4x + x2 = -18.5 + 17.64

Combine like terms: -18.5 + 17.64 = -0.86
17.64 + 8.4x + x2 = -0.86

Factor a perfect square on the left side:
(x + 4.2)(x + 4.2) = -0.86

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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