10x^2+15x+56=0

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Solution for 10x^2+15x+56=0 equation:


Simplifying
10x2 + 15x + 56 = 0

Reorder the terms:
56 + 15x + 10x2 = 0

Solving
56 + 15x + 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'.
5.6 + 1.5x + x2 = 0

Move the constant term to the right:

Add '-5.6' to each side of the equation.
5.6 + 1.5x + -5.6 + x2 = 0 + -5.6

Reorder the terms:
5.6 + -5.6 + 1.5x + x2 = 0 + -5.6

Combine like terms: 5.6 + -5.6 = 0.0
0.0 + 1.5x + x2 = 0 + -5.6
1.5x + x2 = 0 + -5.6

Combine like terms: 0 + -5.6 = -5.6
1.5x + x2 = -5.6

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = -5.6 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = -5.6 + 0.5625

Combine like terms: -5.6 + 0.5625 = -5.0375
0.5625 + 1.5x + x2 = -5.0375

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = -5.0375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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