9n^2+79=18n

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Solution for 9n^2+79=18n equation:


Simplifying
9n2 + 79 = 18n

Reorder the terms:
79 + 9n2 = 18n

Solving
79 + 9n2 = 18n

Solving for variable 'n'.

Reorder the terms:
79 + -18n + 9n2 = 18n + -18n

Combine like terms: 18n + -18n = 0
79 + -18n + 9n2 = 0

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

Divide each side by '9'.
8.777777778 + -2n + n2 = 0

Move the constant term to the right:

Add '-8.777777778' to each side of the equation.
8.777777778 + -2n + -8.777777778 + n2 = 0 + -8.777777778

Reorder the terms:
8.777777778 + -8.777777778 + -2n + n2 = 0 + -8.777777778

Combine like terms: 8.777777778 + -8.777777778 = 0.000000000
0.000000000 + -2n + n2 = 0 + -8.777777778
-2n + n2 = 0 + -8.777777778

Combine like terms: 0 + -8.777777778 = -8.777777778
-2n + n2 = -8.777777778

The n term is -2n.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2n + 1 + n2 = -8.777777778 + 1

Reorder the terms:
1 + -2n + n2 = -8.777777778 + 1

Combine like terms: -8.777777778 + 1 = -7.777777778
1 + -2n + n2 = -7.777777778

Factor a perfect square on the left side:
(n + -1)(n + -1) = -7.777777778

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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