5n^2+19=3n+92-3n^2

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Solution for 5n^2+19=3n+92-3n^2 equation:


Simplifying
5n2 + 19 = 3n + 92 + -3n2

Reorder the terms:
19 + 5n2 = 3n + 92 + -3n2

Reorder the terms:
19 + 5n2 = 92 + 3n + -3n2

Solving
19 + 5n2 = 92 + 3n + -3n2

Solving for variable 'n'.

Reorder the terms:
19 + -92 + -3n + 5n2 + 3n2 = 92 + 3n + -3n2 + -92 + -3n + 3n2

Combine like terms: 19 + -92 = -73
-73 + -3n + 5n2 + 3n2 = 92 + 3n + -3n2 + -92 + -3n + 3n2

Combine like terms: 5n2 + 3n2 = 8n2
-73 + -3n + 8n2 = 92 + 3n + -3n2 + -92 + -3n + 3n2

Reorder the terms:
-73 + -3n + 8n2 = 92 + -92 + 3n + -3n + -3n2 + 3n2

Combine like terms: 92 + -92 = 0
-73 + -3n + 8n2 = 0 + 3n + -3n + -3n2 + 3n2
-73 + -3n + 8n2 = 3n + -3n + -3n2 + 3n2

Combine like terms: 3n + -3n = 0
-73 + -3n + 8n2 = 0 + -3n2 + 3n2
-73 + -3n + 8n2 = -3n2 + 3n2

Combine like terms: -3n2 + 3n2 = 0
-73 + -3n + 8n2 = 0

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

Divide each side by '8'.
-9.125 + -0.375n + n2 = 0

Move the constant term to the right:

Add '9.125' to each side of the equation.
-9.125 + -0.375n + 9.125 + n2 = 0 + 9.125

Reorder the terms:
-9.125 + 9.125 + -0.375n + n2 = 0 + 9.125

Combine like terms: -9.125 + 9.125 = 0.000
0.000 + -0.375n + n2 = 0 + 9.125
-0.375n + n2 = 0 + 9.125

Combine like terms: 0 + 9.125 = 9.125
-0.375n + n2 = 9.125

The n term is -0.375n.  Take half its coefficient (-0.1875).
Square it (0.03515625) and add it to both sides.

Add '0.03515625' to each side of the equation.
-0.375n + 0.03515625 + n2 = 9.125 + 0.03515625

Reorder the terms:
0.03515625 + -0.375n + n2 = 9.125 + 0.03515625

Combine like terms: 9.125 + 0.03515625 = 9.16015625
0.03515625 + -0.375n + n2 = 9.16015625

Factor a perfect square on the left side:
(n + -0.1875)(n + -0.1875) = 9.16015625

Calculate the square root of the right side: 3.026575003

Break this problem into two subproblems by setting 
(n + -0.1875) equal to 3.026575003 and -3.026575003.

Subproblem 1

n + -0.1875 = 3.026575003 Simplifying n + -0.1875 = 3.026575003 Reorder the terms: -0.1875 + n = 3.026575003 Solving -0.1875 + n = 3.026575003 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.1875' to each side of the equation. -0.1875 + 0.1875 + n = 3.026575003 + 0.1875 Combine like terms: -0.1875 + 0.1875 = 0.0000 0.0000 + n = 3.026575003 + 0.1875 n = 3.026575003 + 0.1875 Combine like terms: 3.026575003 + 0.1875 = 3.214075003 n = 3.214075003 Simplifying n = 3.214075003

Subproblem 2

n + -0.1875 = -3.026575003 Simplifying n + -0.1875 = -3.026575003 Reorder the terms: -0.1875 + n = -3.026575003 Solving -0.1875 + n = -3.026575003 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.1875' to each side of the equation. -0.1875 + 0.1875 + n = -3.026575003 + 0.1875 Combine like terms: -0.1875 + 0.1875 = 0.0000 0.0000 + n = -3.026575003 + 0.1875 n = -3.026575003 + 0.1875 Combine like terms: -3.026575003 + 0.1875 = -2.839075003 n = -2.839075003 Simplifying n = -2.839075003

Solution

The solution to the problem is based on the solutions from the subproblems. n = {3.214075003, -2.839075003}

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