0.25n+0.05n(n+5)=2.95

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Solution for 0.25n+0.05n(n+5)=2.95 equation:


Simplifying
0.25n + 0.05n(n + 5) = 2.95

Reorder the terms:
0.25n + 0.05n(5 + n) = 2.95
0.25n + (5 * 0.05n + n * 0.05n) = 2.95
0.25n + (0.25n + 0.05n2) = 2.95

Combine like terms: 0.25n + 0.25n = 0.5n
0.5n + 0.05n2 = 2.95

Solving
0.5n + 0.05n2 = 2.95

Solving for variable 'n'.

Reorder the terms:
-2.95 + 0.5n + 0.05n2 = 2.95 + -2.95

Combine like terms: 2.95 + -2.95 = 0.00
-2.95 + 0.5n + 0.05n2 = 0.00

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

Divide each side by '0.05'.
-59 + 10n + n2 = 0

Move the constant term to the right:

Add '59' to each side of the equation.
-59 + 10n + 59 + n2 = 0 + 59

Reorder the terms:
-59 + 59 + 10n + n2 = 0 + 59

Combine like terms: -59 + 59 = 0
0 + 10n + n2 = 0 + 59
10n + n2 = 0 + 59

Combine like terms: 0 + 59 = 59
10n + n2 = 59

The n term is 10n.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10n + 25 + n2 = 59 + 25

Reorder the terms:
25 + 10n + n2 = 59 + 25

Combine like terms: 59 + 25 = 84
25 + 10n + n2 = 84

Factor a perfect square on the left side:
(n + 5)(n + 5) = 84

Calculate the square root of the right side: 9.16515139

Break this problem into two subproblems by setting 
(n + 5) equal to 9.16515139 and -9.16515139.

Subproblem 1

n + 5 = 9.16515139 Simplifying n + 5 = 9.16515139 Reorder the terms: 5 + n = 9.16515139 Solving 5 + n = 9.16515139 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + n = 9.16515139 + -5 Combine like terms: 5 + -5 = 0 0 + n = 9.16515139 + -5 n = 9.16515139 + -5 Combine like terms: 9.16515139 + -5 = 4.16515139 n = 4.16515139 Simplifying n = 4.16515139

Subproblem 2

n + 5 = -9.16515139 Simplifying n + 5 = -9.16515139 Reorder the terms: 5 + n = -9.16515139 Solving 5 + n = -9.16515139 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + n = -9.16515139 + -5 Combine like terms: 5 + -5 = 0 0 + n = -9.16515139 + -5 n = -9.16515139 + -5 Combine like terms: -9.16515139 + -5 = -14.16515139 n = -14.16515139 Simplifying n = -14.16515139

Solution

The solution to the problem is based on the solutions from the subproblems. n = {4.16515139, -14.16515139}

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