(x-8)=(5x^2-7x-1)

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Solution for (x-8)=(5x^2-7x-1) equation:


Simplifying
(x + -8) = (5x2 + -7x + -1)

Reorder the terms:
(-8 + x) = (5x2 + -7x + -1)

Remove parenthesis around (-8 + x)
-8 + x = (5x2 + -7x + -1)

Reorder the terms:
-8 + x = (-1 + -7x + 5x2)

Remove parenthesis around (-1 + -7x + 5x2)
-8 + x = -1 + -7x + 5x2

Solving
-8 + x = -1 + -7x + 5x2

Solving for variable 'x'.

Reorder the terms:
-8 + 1 + x + 7x + -5x2 = -1 + -7x + 5x2 + 1 + 7x + -5x2

Combine like terms: -8 + 1 = -7
-7 + x + 7x + -5x2 = -1 + -7x + 5x2 + 1 + 7x + -5x2

Combine like terms: x + 7x = 8x
-7 + 8x + -5x2 = -1 + -7x + 5x2 + 1 + 7x + -5x2

Reorder the terms:
-7 + 8x + -5x2 = -1 + 1 + -7x + 7x + 5x2 + -5x2

Combine like terms: -1 + 1 = 0
-7 + 8x + -5x2 = 0 + -7x + 7x + 5x2 + -5x2
-7 + 8x + -5x2 = -7x + 7x + 5x2 + -5x2

Combine like terms: -7x + 7x = 0
-7 + 8x + -5x2 = 0 + 5x2 + -5x2
-7 + 8x + -5x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
-7 + 8x + -5x2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
1.4 + -1.6x + x2 = 0

Move the constant term to the right:

Add '-1.4' to each side of the equation.
1.4 + -1.6x + -1.4 + x2 = 0 + -1.4

Reorder the terms:
1.4 + -1.4 + -1.6x + x2 = 0 + -1.4

Combine like terms: 1.4 + -1.4 = 0.0
0.0 + -1.6x + x2 = 0 + -1.4
-1.6x + x2 = 0 + -1.4

Combine like terms: 0 + -1.4 = -1.4
-1.6x + x2 = -1.4

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 = -1.4 + 0.64

Reorder the terms:
0.64 + -1.6x + x2 = -1.4 + 0.64

Combine like terms: -1.4 + 0.64 = -0.76
0.64 + -1.6x + x2 = -0.76

Factor a perfect square on the left side:
(x + -0.8)(x + -0.8) = -0.76

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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