4k(k+3)=-19

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Solution for 4k(k+3)=-19 equation:


Simplifying
4k(k + 3) = -19

Reorder the terms:
4k(3 + k) = -19
(3 * 4k + k * 4k) = -19
(12k + 4k2) = -19

Solving
12k + 4k2 = -19

Solving for variable 'k'.

Reorder the terms:
19 + 12k + 4k2 = -19 + 19

Combine like terms: -19 + 19 = 0
19 + 12k + 4k2 = 0

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

Divide each side by '4'.
4.75 + 3k + k2 = 0

Move the constant term to the right:

Add '-4.75' to each side of the equation.
4.75 + 3k + -4.75 + k2 = 0 + -4.75

Reorder the terms:
4.75 + -4.75 + 3k + k2 = 0 + -4.75

Combine like terms: 4.75 + -4.75 = 0.00
0.00 + 3k + k2 = 0 + -4.75
3k + k2 = 0 + -4.75

Combine like terms: 0 + -4.75 = -4.75
3k + k2 = -4.75

The k term is 3k.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3k + 2.25 + k2 = -4.75 + 2.25

Reorder the terms:
2.25 + 3k + k2 = -4.75 + 2.25

Combine like terms: -4.75 + 2.25 = -2.5
2.25 + 3k + k2 = -2.5

Factor a perfect square on the left side:
(k + 1.5)(k + 1.5) = -2.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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