(5x^2-2x-1)-(x^2-3x-5)=0

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Solution for (5x^2-2x-1)-(x^2-3x-5)=0 equation:


Simplifying
(5x2 + -2x + -1) + -1(x2 + -3x + -5) = 0

Reorder the terms:
(-1 + -2x + 5x2) + -1(x2 + -3x + -5) = 0

Remove parenthesis around (-1 + -2x + 5x2)
-1 + -2x + 5x2 + -1(x2 + -3x + -5) = 0

Reorder the terms:
-1 + -2x + 5x2 + -1(-5 + -3x + x2) = 0
-1 + -2x + 5x2 + (-5 * -1 + -3x * -1 + x2 * -1) = 0
-1 + -2x + 5x2 + (5 + 3x + -1x2) = 0

Reorder the terms:
-1 + 5 + -2x + 3x + 5x2 + -1x2 = 0

Combine like terms: -1 + 5 = 4
4 + -2x + 3x + 5x2 + -1x2 = 0

Combine like terms: -2x + 3x = 1x
4 + 1x + 5x2 + -1x2 = 0

Combine like terms: 5x2 + -1x2 = 4x2
4 + 1x + 4x2 = 0

Solving
4 + 1x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
1 + 0.25x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + 0.25x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + 0.25x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 0.25x + x2 = 0 + -1
0.25x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
0.25x + x2 = -1

The x term is 0.25x.  Take half its coefficient (0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
0.25x + 0.015625 + x2 = -1 + 0.015625

Reorder the terms:
0.015625 + 0.25x + x2 = -1 + 0.015625

Combine like terms: -1 + 0.015625 = -0.984375
0.015625 + 0.25x + x2 = -0.984375

Factor a perfect square on the left side:
(x + 0.125)(x + 0.125) = -0.984375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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