-5n^2+12n-100=0

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Solution for -5n^2+12n-100=0 equation:


Simplifying
-5n2 + 12n + -100 = 0

Reorder the terms:
-100 + 12n + -5n2 = 0

Solving
-100 + 12n + -5n2 = 0

Solving for variable 'n'.

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
20 + -2.4n + n2 = 0

Move the constant term to the right:

Add '-20' to each side of the equation.
20 + -2.4n + -20 + n2 = 0 + -20

Reorder the terms:
20 + -20 + -2.4n + n2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -2.4n + n2 = 0 + -20
-2.4n + n2 = 0 + -20

Combine like terms: 0 + -20 = -20
-2.4n + n2 = -20

The n term is -2.4n.  Take half its coefficient (-1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
-2.4n + 1.44 + n2 = -20 + 1.44

Reorder the terms:
1.44 + -2.4n + n2 = -20 + 1.44

Combine like terms: -20 + 1.44 = -18.56
1.44 + -2.4n + n2 = -18.56

Factor a perfect square on the left side:
(n + -1.2)(n + -1.2) = -18.56

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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