10k^2+9+4k+3k^2-9k^2=

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Solution for 10k^2+9+4k+3k^2-9k^2= equation:


Simplifying
10k2 + 9 + 4k + 3k2 + -9k2 = 0

Reorder the terms:
9 + 4k + 10k2 + 3k2 + -9k2 = 0

Combine like terms: 10k2 + 3k2 = 13k2
9 + 4k + 13k2 + -9k2 = 0

Combine like terms: 13k2 + -9k2 = 4k2
9 + 4k + 4k2 = 0

Solving
9 + 4k + 4k2 = 0

Solving for variable 'k'.

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

Divide each side by '4'.
2.25 + k + k2 = 0

Move the constant term to the right:

Add '-2.25' to each side of the equation.
2.25 + k + -2.25 + k2 = 0 + -2.25

Reorder the terms:
2.25 + -2.25 + k + k2 = 0 + -2.25

Combine like terms: 2.25 + -2.25 = 0.00
0.00 + k + k2 = 0 + -2.25
k + k2 = 0 + -2.25

Combine like terms: 0 + -2.25 = -2.25
k + k2 = -2.25

The k term is k.  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.
 + 0.25 + k2 = -2.25 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + k2 = -2.25 + 0.25

Combine like terms: -2.25 + 0.25 = -2
1.25 + k2 = -2

Factor a perfect square on the left side:
(k + 0.5)(k + 0.5) = -2

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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