4n^2+12n+9=-5

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Solution for 4n^2+12n+9=-5 equation:


Simplifying
4n2 + 12n + 9 = -5

Reorder the terms:
9 + 12n + 4n2 = -5

Solving
9 + 12n + 4n2 = -5

Solving for variable 'n'.

Reorder the terms:
9 + 5 + 12n + 4n2 = -5 + 5

Combine like terms: 9 + 5 = 14
14 + 12n + 4n2 = -5 + 5

Combine like terms: -5 + 5 = 0
14 + 12n + 4n2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(7 + 6n + 2n2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(7 + 6n + 2n2)' equal to zero and attempt to solve: Simplifying 7 + 6n + 2n2 = 0 Solving 7 + 6n + 2n2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 3.5 + 3n + n2 = 0 Move the constant term to the right: Add '-3.5' to each side of the equation. 3.5 + 3n + -3.5 + n2 = 0 + -3.5 Reorder the terms: 3.5 + -3.5 + 3n + n2 = 0 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + 3n + n2 = 0 + -3.5 3n + n2 = 0 + -3.5 Combine like terms: 0 + -3.5 = -3.5 3n + n2 = -3.5 The n term is 3n. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3n + 2.25 + n2 = -3.5 + 2.25 Reorder the terms: 2.25 + 3n + n2 = -3.5 + 2.25 Combine like terms: -3.5 + 2.25 = -1.25 2.25 + 3n + n2 = -1.25 Factor a perfect square on the left side: (n + 1.5)(n + 1.5) = -1.25 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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