10x^2=-4x-5

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Solution for 10x^2=-4x-5 equation:


Simplifying
10x2 = -4x + -5

Reorder the terms:
10x2 = -5 + -4x

Solving
10x2 = -5 + -4x

Solving for variable 'x'.

Reorder the terms:
5 + 4x + 10x2 = -5 + -4x + 5 + 4x

Reorder the terms:
5 + 4x + 10x2 = -5 + 5 + -4x + 4x

Combine like terms: -5 + 5 = 0
5 + 4x + 10x2 = 0 + -4x + 4x
5 + 4x + 10x2 = -4x + 4x

Combine like terms: -4x + 4x = 0
5 + 4x + 10x2 = 0

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

Divide each side by '10'.
0.5 + 0.4x + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + 0.4x + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + 0.4x + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + 0.4x + x2 = 0 + -0.5
0.4x + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
0.4x + x2 = -0.5

The x term is 0.4x.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4x + 0.04 + x2 = -0.5 + 0.04

Reorder the terms:
0.04 + 0.4x + x2 = -0.5 + 0.04

Combine like terms: -0.5 + 0.04 = -0.46
0.04 + 0.4x + x2 = -0.46

Factor a perfect square on the left side:
(x + 0.2)(x + 0.2) = -0.46

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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