(6k^2+2k+9)+(4k^2-5k)=

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Solution for (6k^2+2k+9)+(4k^2-5k)= equation:


Simplifying
(6k2 + 2k + 9) + (4k2 + -5k) = 0

Reorder the terms:
(9 + 2k + 6k2) + (4k2 + -5k) = 0

Remove parenthesis around (9 + 2k + 6k2)
9 + 2k + 6k2 + (4k2 + -5k) = 0

Reorder the terms:
9 + 2k + 6k2 + (-5k + 4k2) = 0

Remove parenthesis around (-5k + 4k2)
9 + 2k + 6k2 + -5k + 4k2 = 0

Reorder the terms:
9 + 2k + -5k + 6k2 + 4k2 = 0

Combine like terms: 2k + -5k = -3k
9 + -3k + 6k2 + 4k2 = 0

Combine like terms: 6k2 + 4k2 = 10k2
9 + -3k + 10k2 = 0

Solving
9 + -3k + 10k2 = 0

Solving for variable 'k'.

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

Divide each side by '10'.
0.9 + -0.3k + k2 = 0.0

Move the constant term to the right:

Add '-0.9' to each side of the equation.
0.9 + -0.3k + -0.9 + k2 = 0.0 + -0.9

Reorder the terms:
0.9 + -0.9 + -0.3k + k2 = 0.0 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + -0.3k + k2 = 0.0 + -0.9
-0.3k + k2 = 0.0 + -0.9

Combine like terms: 0.0 + -0.9 = -0.9
-0.3k + k2 = -0.9

The k term is -0.3k.  Take half its coefficient (-0.15).
Square it (0.0225) and add it to both sides.

Add '0.0225' to each side of the equation.
-0.3k + 0.0225 + k2 = -0.9 + 0.0225

Reorder the terms:
0.0225 + -0.3k + k2 = -0.9 + 0.0225

Combine like terms: -0.9 + 0.0225 = -0.8775
0.0225 + -0.3k + k2 = -0.8775

Factor a perfect square on the left side:
(k + -0.15)(k + -0.15) = -0.8775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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