2k(k+7)+49=0

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Solution for 2k(k+7)+49=0 equation:


Simplifying
2k(k + 7) + 49 = 0

Reorder the terms:
2k(7 + k) + 49 = 0
(7 * 2k + k * 2k) + 49 = 0
(14k + 2k2) + 49 = 0

Reorder the terms:
49 + 14k + 2k2 = 0

Solving
49 + 14k + 2k2 = 0

Solving for variable 'k'.

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

Divide each side by '2'.
24.5 + 7k + k2 = 0

Move the constant term to the right:

Add '-24.5' to each side of the equation.
24.5 + 7k + -24.5 + k2 = 0 + -24.5

Reorder the terms:
24.5 + -24.5 + 7k + k2 = 0 + -24.5

Combine like terms: 24.5 + -24.5 = 0.0
0.0 + 7k + k2 = 0 + -24.5
7k + k2 = 0 + -24.5

Combine like terms: 0 + -24.5 = -24.5
7k + k2 = -24.5

The k term is 7k.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7k + 12.25 + k2 = -24.5 + 12.25

Reorder the terms:
12.25 + 7k + k2 = -24.5 + 12.25

Combine like terms: -24.5 + 12.25 = -12.25
12.25 + 7k + k2 = -12.25

Factor a perfect square on the left side:
(k + 3.5)(k + 3.5) = -12.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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