n^2+4n=33

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Solution for n^2+4n=33 equation:


Simplifying
n2 + 4n = 33

Reorder the terms:
4n + n2 = 33

Solving
4n + n2 = 33

Solving for variable 'n'.

Reorder the terms:
-33 + 4n + n2 = 33 + -33

Combine like terms: 33 + -33 = 0
-33 + 4n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '33' to each side of the equation.
-33 + 4n + 33 + n2 = 0 + 33

Reorder the terms:
-33 + 33 + 4n + n2 = 0 + 33

Combine like terms: -33 + 33 = 0
0 + 4n + n2 = 0 + 33
4n + n2 = 0 + 33

Combine like terms: 0 + 33 = 33
4n + n2 = 33

The n term is 4n.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4n + 4 + n2 = 33 + 4

Reorder the terms:
4 + 4n + n2 = 33 + 4

Combine like terms: 33 + 4 = 37
4 + 4n + n2 = 37

Factor a perfect square on the left side:
(n + 2)(n + 2) = 37

Calculate the square root of the right side: 6.08276253

Break this problem into two subproblems by setting 
(n + 2) equal to 6.08276253 and -6.08276253.

Subproblem 1

n + 2 = 6.08276253 Simplifying n + 2 = 6.08276253 Reorder the terms: 2 + n = 6.08276253 Solving 2 + n = 6.08276253 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + n = 6.08276253 + -2 Combine like terms: 2 + -2 = 0 0 + n = 6.08276253 + -2 n = 6.08276253 + -2 Combine like terms: 6.08276253 + -2 = 4.08276253 n = 4.08276253 Simplifying n = 4.08276253

Subproblem 2

n + 2 = -6.08276253 Simplifying n + 2 = -6.08276253 Reorder the terms: 2 + n = -6.08276253 Solving 2 + n = -6.08276253 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + n = -6.08276253 + -2 Combine like terms: 2 + -2 = 0 0 + n = -6.08276253 + -2 n = -6.08276253 + -2 Combine like terms: -6.08276253 + -2 = -8.08276253 n = -8.08276253 Simplifying n = -8.08276253

Solution

The solution to the problem is based on the solutions from the subproblems. n = {4.08276253, -8.08276253}

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