(6x^2-x+9)+(2x^2+4x-8)=

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Solution for (6x^2-x+9)+(2x^2+4x-8)= equation:


Simplifying
(6x2 + -1x + 9) + (2x2 + 4x + -8) = 0

Reorder the terms:
(9 + -1x + 6x2) + (2x2 + 4x + -8) = 0

Remove parenthesis around (9 + -1x + 6x2)
9 + -1x + 6x2 + (2x2 + 4x + -8) = 0

Reorder the terms:
9 + -1x + 6x2 + (-8 + 4x + 2x2) = 0

Remove parenthesis around (-8 + 4x + 2x2)
9 + -1x + 6x2 + -8 + 4x + 2x2 = 0

Reorder the terms:
9 + -8 + -1x + 4x + 6x2 + 2x2 = 0

Combine like terms: 9 + -8 = 1
1 + -1x + 4x + 6x2 + 2x2 = 0

Combine like terms: -1x + 4x = 3x
1 + 3x + 6x2 + 2x2 = 0

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

Solving
1 + 3x + 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'.
0.125 + 0.375x + x2 = 0

Move the constant term to the right:

Add '-0.125' to each side of the equation.
0.125 + 0.375x + -0.125 + x2 = 0 + -0.125

Reorder the terms:
0.125 + -0.125 + 0.375x + x2 = 0 + -0.125

Combine like terms: 0.125 + -0.125 = 0.000
0.000 + 0.375x + x2 = 0 + -0.125
0.375x + x2 = 0 + -0.125

Combine like terms: 0 + -0.125 = -0.125
0.375x + x2 = -0.125

The x term is 0.375x.  Take half its coefficient (0.1875).
Square it (0.03515625) and add it to both sides.

Add '0.03515625' to each side of the equation.
0.375x + 0.03515625 + x2 = -0.125 + 0.03515625

Reorder the terms:
0.03515625 + 0.375x + x2 = -0.125 + 0.03515625

Combine like terms: -0.125 + 0.03515625 = -0.08984375
0.03515625 + 0.375x + x2 = -0.08984375

Factor a perfect square on the left side:
(x + 0.1875)(x + 0.1875) = -0.08984375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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