(7x^2-8x-1)+(2x^2-3x+7)-(x^2-3x-5)=

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Solution for (7x^2-8x-1)+(2x^2-3x+7)-(x^2-3x-5)= equation:


Simplifying
(7x2 + -8x + -1) + (2x2 + -3x + 7) + -1(x2 + -3x + -5) = 0

Reorder the terms:
(-1 + -8x + 7x2) + (2x2 + -3x + 7) + -1(x2 + -3x + -5) = 0

Remove parenthesis around (-1 + -8x + 7x2)
-1 + -8x + 7x2 + (2x2 + -3x + 7) + -1(x2 + -3x + -5) = 0

Reorder the terms:
-1 + -8x + 7x2 + (7 + -3x + 2x2) + -1(x2 + -3x + -5) = 0

Remove parenthesis around (7 + -3x + 2x2)
-1 + -8x + 7x2 + 7 + -3x + 2x2 + -1(x2 + -3x + -5) = 0

Reorder the terms:
-1 + -8x + 7x2 + 7 + -3x + 2x2 + -1(-5 + -3x + x2) = 0
-1 + -8x + 7x2 + 7 + -3x + 2x2 + (-5 * -1 + -3x * -1 + x2 * -1) = 0
-1 + -8x + 7x2 + 7 + -3x + 2x2 + (5 + 3x + -1x2) = 0

Reorder the terms:
-1 + 7 + 5 + -8x + -3x + 3x + 7x2 + 2x2 + -1x2 = 0

Combine like terms: -1 + 7 = 6
6 + 5 + -8x + -3x + 3x + 7x2 + 2x2 + -1x2 = 0

Combine like terms: 6 + 5 = 11
11 + -8x + -3x + 3x + 7x2 + 2x2 + -1x2 = 0

Combine like terms: -8x + -3x = -11x
11 + -11x + 3x + 7x2 + 2x2 + -1x2 = 0

Combine like terms: -11x + 3x = -8x
11 + -8x + 7x2 + 2x2 + -1x2 = 0

Combine like terms: 7x2 + 2x2 = 9x2
11 + -8x + 9x2 + -1x2 = 0

Combine like terms: 9x2 + -1x2 = 8x2
11 + -8x + 8x2 = 0

Solving
11 + -8x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
1.375 + -1x + x2 = 0

Move the constant term to the right:

Add '-1.375' to each side of the equation.
1.375 + -1x + -1.375 + x2 = 0 + -1.375

Reorder the terms:
1.375 + -1.375 + -1x + x2 = 0 + -1.375

Combine like terms: 1.375 + -1.375 = 0.000
0.000 + -1x + x2 = 0 + -1.375
-1x + x2 = 0 + -1.375

Combine like terms: 0 + -1.375 = -1.375
-1x + x2 = -1.375

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = -1.375 + 0.25

Reorder the terms:
0.25 + -1x + x2 = -1.375 + 0.25

Combine like terms: -1.375 + 0.25 = -1.125
0.25 + -1x + x2 = -1.125

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = -1.125

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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