-x^2-x-4+(-6x^2+7x-8)=

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Solution for -x^2-x-4+(-6x^2+7x-8)= equation:


Simplifying
-1x2 + -1x + -4 + (-6x2 + 7x + -8) = 0

Reorder the terms:
-1x2 + -1x + -4 + (-8 + 7x + -6x2) = 0

Remove parenthesis around (-8 + 7x + -6x2)
-1x2 + -1x + -4 + -8 + 7x + -6x2 = 0

Reorder the terms:
-4 + -8 + -1x + 7x + -1x2 + -6x2 = 0

Combine like terms: -4 + -8 = -12
-12 + -1x + 7x + -1x2 + -6x2 = 0

Combine like terms: -1x + 7x = 6x
-12 + 6x + -1x2 + -6x2 = 0

Combine like terms: -1x2 + -6x2 = -7x2
-12 + 6x + -7x2 = 0

Solving
-12 + 6x + -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'.
1.714285714 + -0.8571428571x + x2 = 0

Move the constant term to the right:

Add '-1.714285714' to each side of the equation.
1.714285714 + -0.8571428571x + -1.714285714 + x2 = 0 + -1.714285714

Reorder the terms:
1.714285714 + -1.714285714 + -0.8571428571x + x2 = 0 + -1.714285714

Combine like terms: 1.714285714 + -1.714285714 = 0.000000000
0.000000000 + -0.8571428571x + x2 = 0 + -1.714285714
-0.8571428571x + x2 = 0 + -1.714285714

Combine like terms: 0 + -1.714285714 = -1.714285714
-0.8571428571x + x2 = -1.714285714

The x term is -0.8571428571x.  Take half its coefficient (-0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
-0.8571428571x + 0.1836734694 + x2 = -1.714285714 + 0.1836734694

Reorder the terms:
0.1836734694 + -0.8571428571x + x2 = -1.714285714 + 0.1836734694

Combine like terms: -1.714285714 + 0.1836734694 = -1.5306122446
0.1836734694 + -0.8571428571x + x2 = -1.5306122446

Factor a perfect square on the left side:
(x + -0.4285714286)(x + -0.4285714286) = -1.5306122446

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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