4k^2+3k+19=9

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Solution for 4k^2+3k+19=9 equation:


Simplifying
4k2 + 3k + 19 = 9

Reorder the terms:
19 + 3k + 4k2 = 9

Solving
19 + 3k + 4k2 = 9

Solving for variable 'k'.

Reorder the terms:
19 + -9 + 3k + 4k2 = 9 + -9

Combine like terms: 19 + -9 = 10
10 + 3k + 4k2 = 9 + -9

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

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

Divide each side by '4'.
2.5 + 0.75k + k2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + 0.75k + -2.5 + k2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + 0.75k + k2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + 0.75k + k2 = 0 + -2.5
0.75k + k2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
0.75k + k2 = -2.5

The k term is 0.75k.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75k + 0.140625 + k2 = -2.5 + 0.140625

Reorder the terms:
0.140625 + 0.75k + k2 = -2.5 + 0.140625

Combine like terms: -2.5 + 0.140625 = -2.359375
0.140625 + 0.75k + k2 = -2.359375

Factor a perfect square on the left side:
(k + 0.375)(k + 0.375) = -2.359375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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