n=2n^2+5

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Solution for n=2n^2+5 equation:


Simplifying
n = 2n2 + 5

Reorder the terms:
n = 5 + 2n2

Solving
n = 5 + 2n2

Solving for variable 'n'.

Reorder the terms:
-5 + n + -2n2 = 5 + 2n2 + -5 + -2n2

Reorder the terms:
-5 + n + -2n2 = 5 + -5 + 2n2 + -2n2

Combine like terms: 5 + -5 = 0
-5 + n + -2n2 = 0 + 2n2 + -2n2
-5 + n + -2n2 = 2n2 + -2n2

Combine like terms: 2n2 + -2n2 = 0
-5 + n + -2n2 = 0

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

Divide each side by '-2'.
2.5 + -0.5n + n2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + -0.5n + -2.5 + n2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + -0.5n + n2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -0.5n + n2 = 0 + -2.5
-0.5n + n2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
-0.5n + n2 = -2.5

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

Add '0.25' to each side of the equation.
-0.5n + 0.25 + n2 = -2.5 + 0.25

Reorder the terms:
0.25 + -0.5n + n2 = -2.5 + 0.25

Combine like terms: -2.5 + 0.25 = -2.25
0.25 + -0.5n + n2 = -2.25

Factor a perfect square on the left side:
(n + 0.5)(n + 0.5) = -2.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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