(x^2+5x-1)-(8x^2-5x+9)=

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Solution for (x^2+5x-1)-(8x^2-5x+9)= equation:


Simplifying
(x2 + 5x + -1) + -1(8x2 + -5x + 9) = 0

Reorder the terms:
(-1 + 5x + x2) + -1(8x2 + -5x + 9) = 0

Remove parenthesis around (-1 + 5x + x2)
-1 + 5x + x2 + -1(8x2 + -5x + 9) = 0

Reorder the terms:
-1 + 5x + x2 + -1(9 + -5x + 8x2) = 0
-1 + 5x + x2 + (9 * -1 + -5x * -1 + 8x2 * -1) = 0
-1 + 5x + x2 + (-9 + 5x + -8x2) = 0

Reorder the terms:
-1 + -9 + 5x + 5x + x2 + -8x2 = 0

Combine like terms: -1 + -9 = -10
-10 + 5x + 5x + x2 + -8x2 = 0

Combine like terms: 5x + 5x = 10x
-10 + 10x + x2 + -8x2 = 0

Combine like terms: x2 + -8x2 = -7x2
-10 + 10x + -7x2 = 0

Solving
-10 + 10x + -7x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
1.428571429 + -1.428571429x + x2 = 0

Move the constant term to the right:

Add '-1.428571429' to each side of the equation.
1.428571429 + -1.428571429x + -1.428571429 + x2 = 0 + -1.428571429

Reorder the terms:
1.428571429 + -1.428571429 + -1.428571429x + x2 = 0 + -1.428571429

Combine like terms: 1.428571429 + -1.428571429 = 0.000000000
0.000000000 + -1.428571429x + x2 = 0 + -1.428571429
-1.428571429x + x2 = 0 + -1.428571429

Combine like terms: 0 + -1.428571429 = -1.428571429
-1.428571429x + x2 = -1.428571429

The x term is -1.428571429x.  Take half its coefficient (-0.7142857145).
Square it (0.5102040819) and add it to both sides.

Add '0.5102040819' to each side of the equation.
-1.428571429x + 0.5102040819 + x2 = -1.428571429 + 0.5102040819

Reorder the terms:
0.5102040819 + -1.428571429x + x2 = -1.428571429 + 0.5102040819

Combine like terms: -1.428571429 + 0.5102040819 = -0.9183673471
0.5102040819 + -1.428571429x + x2 = -0.9183673471

Factor a perfect square on the left side:
(x + -0.7142857145)(x + -0.7142857145) = -0.9183673471

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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