n^2+20n=-94

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Solution for n^2+20n=-94 equation:


Simplifying
n2 + 20n = -94

Reorder the terms:
20n + n2 = -94

Solving
20n + n2 = -94

Solving for variable 'n'.

Reorder the terms:
94 + 20n + n2 = -94 + 94

Combine like terms: -94 + 94 = 0
94 + 20n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-94' to each side of the equation.
94 + 20n + -94 + n2 = 0 + -94

Reorder the terms:
94 + -94 + 20n + n2 = 0 + -94

Combine like terms: 94 + -94 = 0
0 + 20n + n2 = 0 + -94
20n + n2 = 0 + -94

Combine like terms: 0 + -94 = -94
20n + n2 = -94

The n term is 20n.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20n + 100 + n2 = -94 + 100

Reorder the terms:
100 + 20n + n2 = -94 + 100

Combine like terms: -94 + 100 = 6
100 + 20n + n2 = 6

Factor a perfect square on the left side:
(n + 10)(n + 10) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(n + 10) equal to 2.449489743 and -2.449489743.

Subproblem 1

n + 10 = 2.449489743 Simplifying n + 10 = 2.449489743 Reorder the terms: 10 + n = 2.449489743 Solving 10 + n = 2.449489743 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + n = 2.449489743 + -10 Combine like terms: 10 + -10 = 0 0 + n = 2.449489743 + -10 n = 2.449489743 + -10 Combine like terms: 2.449489743 + -10 = -7.550510257 n = -7.550510257 Simplifying n = -7.550510257

Subproblem 2

n + 10 = -2.449489743 Simplifying n + 10 = -2.449489743 Reorder the terms: 10 + n = -2.449489743 Solving 10 + n = -2.449489743 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + n = -2.449489743 + -10 Combine like terms: 10 + -10 = 0 0 + n = -2.449489743 + -10 n = -2.449489743 + -10 Combine like terms: -2.449489743 + -10 = -12.449489743 n = -12.449489743 Simplifying n = -12.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. n = {-7.550510257, -12.449489743}

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