-5n^2-26n+48=0

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Solution for -5n^2-26n+48=0 equation:


Simplifying
-5n2 + -26n + 48 = 0

Reorder the terms:
48 + -26n + -5n2 = 0

Solving
48 + -26n + -5n2 = 0

Solving for variable 'n'.

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-9.6 + 5.2n + n2 = 0

Move the constant term to the right:

Add '9.6' to each side of the equation.
-9.6 + 5.2n + 9.6 + n2 = 0 + 9.6

Reorder the terms:
-9.6 + 9.6 + 5.2n + n2 = 0 + 9.6

Combine like terms: -9.6 + 9.6 = 0.0
0.0 + 5.2n + n2 = 0 + 9.6
5.2n + n2 = 0 + 9.6

Combine like terms: 0 + 9.6 = 9.6
5.2n + n2 = 9.6

The n term is 5.2n.  Take half its coefficient (2.6).
Square it (6.76) and add it to both sides.

Add '6.76' to each side of the equation.
5.2n + 6.76 + n2 = 9.6 + 6.76

Reorder the terms:
6.76 + 5.2n + n2 = 9.6 + 6.76

Combine like terms: 9.6 + 6.76 = 16.36
6.76 + 5.2n + n2 = 16.36

Factor a perfect square on the left side:
(n + 2.6)(n + 2.6) = 16.36

Calculate the square root of the right side: 4.044749683

Break this problem into two subproblems by setting 
(n + 2.6) equal to 4.044749683 and -4.044749683.

Subproblem 1

n + 2.6 = 4.044749683 Simplifying n + 2.6 = 4.044749683 Reorder the terms: 2.6 + n = 4.044749683 Solving 2.6 + n = 4.044749683 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + n = 4.044749683 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + n = 4.044749683 + -2.6 n = 4.044749683 + -2.6 Combine like terms: 4.044749683 + -2.6 = 1.444749683 n = 1.444749683 Simplifying n = 1.444749683

Subproblem 2

n + 2.6 = -4.044749683 Simplifying n + 2.6 = -4.044749683 Reorder the terms: 2.6 + n = -4.044749683 Solving 2.6 + n = -4.044749683 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2.6' to each side of the equation. 2.6 + -2.6 + n = -4.044749683 + -2.6 Combine like terms: 2.6 + -2.6 = 0.0 0.0 + n = -4.044749683 + -2.6 n = -4.044749683 + -2.6 Combine like terms: -4.044749683 + -2.6 = -6.644749683 n = -6.644749683 Simplifying n = -6.644749683

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.444749683, -6.644749683}

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