-3=3n^2+9n

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Solution for -3=3n^2+9n equation:


Simplifying
-3 = 3n2 + 9n

Reorder the terms:
-3 = 9n + 3n2

Solving
-3 = 9n + 3n2

Solving for variable 'n'.

Reorder the terms:
-3 + -9n + -3n2 = 9n + -9n + 3n2 + -3n2

Combine like terms: 9n + -9n = 0
-3 + -9n + -3n2 = 0 + 3n2 + -3n2
-3 + -9n + -3n2 = 3n2 + -3n2

Combine like terms: 3n2 + -3n2 = 0
-3 + -9n + -3n2 = 0

Factor out the Greatest Common Factor (GCF), '-3'.
-3(1 + 3n + n2) = 0

Ignore the factor -3.

Subproblem 1

Set the factor '(1 + 3n + n2)' equal to zero and attempt to solve: Simplifying 1 + 3n + n2 = 0 Solving 1 + 3n + n2 = 0 Begin completing the square. Move the constant term to the right: Add '-1' to each side of the equation. 1 + 3n + -1 + n2 = 0 + -1 Reorder the terms: 1 + -1 + 3n + n2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 3n + n2 = 0 + -1 3n + n2 = 0 + -1 Combine like terms: 0 + -1 = -1 3n + n2 = -1 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 = -1 + 2.25 Reorder the terms: 2.25 + 3n + n2 = -1 + 2.25 Combine like terms: -1 + 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 Calculate the square root of the right side: 1.118033989 Break this problem into two subproblems by setting (n + 1.5) equal to 1.118033989 and -1.118033989.

Subproblem 1

n + 1.5 = 1.118033989 Simplifying n + 1.5 = 1.118033989 Reorder the terms: 1.5 + n = 1.118033989 Solving 1.5 + n = 1.118033989 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + n = 1.118033989 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + n = 1.118033989 + -1.5 n = 1.118033989 + -1.5 Combine like terms: 1.118033989 + -1.5 = -0.381966011 n = -0.381966011 Simplifying n = -0.381966011

Subproblem 2

n + 1.5 = -1.118033989 Simplifying n + 1.5 = -1.118033989 Reorder the terms: 1.5 + n = -1.118033989 Solving 1.5 + n = -1.118033989 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + n = -1.118033989 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + n = -1.118033989 + -1.5 n = -1.118033989 + -1.5 Combine like terms: -1.118033989 + -1.5 = -2.618033989 n = -2.618033989 Simplifying n = -2.618033989

Solution

The solution to the problem is based on the solutions from the subproblems. n = {-0.381966011, -2.618033989}

Solution

n = {-0.381966011, -2.618033989}

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