5n^2+7n+12=-5n^2

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Solution for 5n^2+7n+12=-5n^2 equation:


Simplifying
5n2 + 7n + 12 = -5n2

Reorder the terms:
12 + 7n + 5n2 = -5n2

Solving
12 + 7n + 5n2 = -5n2

Solving for variable 'n'.

Combine like terms: 5n2 + 5n2 = 10n2
12 + 7n + 10n2 = -5n2 + 5n2

Combine like terms: -5n2 + 5n2 = 0
12 + 7n + 10n2 = 0

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

Divide each side by '10'.
1.2 + 0.7n + n2 = 0.0

Move the constant term to the right:

Add '-1.2' to each side of the equation.
1.2 + 0.7n + -1.2 + n2 = 0.0 + -1.2

Reorder the terms:
1.2 + -1.2 + 0.7n + n2 = 0.0 + -1.2

Combine like terms: 1.2 + -1.2 = 0.0
0.0 + 0.7n + n2 = 0.0 + -1.2
0.7n + n2 = 0.0 + -1.2

Combine like terms: 0.0 + -1.2 = -1.2
0.7n + n2 = -1.2

The n term is 0.7n.  Take half its coefficient (0.35).
Square it (0.1225) and add it to both sides.

Add '0.1225' to each side of the equation.
0.7n + 0.1225 + n2 = -1.2 + 0.1225

Reorder the terms:
0.1225 + 0.7n + n2 = -1.2 + 0.1225

Combine like terms: -1.2 + 0.1225 = -1.0775
0.1225 + 0.7n + n2 = -1.0775

Factor a perfect square on the left side:
(n + 0.35)(n + 0.35) = -1.0775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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