2l^2-l+28=

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Solution for 2l^2-l+28= equation:


Simplifying
2l2 + -1l + 28 = 0

Reorder the terms:
28 + -1l + 2l2 = 0

Solving
28 + -1l + 2l2 = 0

Solving for variable 'l'.

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

Divide each side by '2'.
14 + -0.5l + l2 = 0

Move the constant term to the right:

Add '-14' to each side of the equation.
14 + -0.5l + -14 + l2 = 0 + -14

Reorder the terms:
14 + -14 + -0.5l + l2 = 0 + -14

Combine like terms: 14 + -14 = 0
0 + -0.5l + l2 = 0 + -14
-0.5l + l2 = 0 + -14

Combine like terms: 0 + -14 = -14
-0.5l + l2 = -14

The l term is -0.5l.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5l + 0.0625 + l2 = -14 + 0.0625

Reorder the terms:
0.0625 + -0.5l + l2 = -14 + 0.0625

Combine like terms: -14 + 0.0625 = -13.9375
0.0625 + -0.5l + l2 = -13.9375

Factor a perfect square on the left side:
(l + -0.25)(l + -0.25) = -13.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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