10n^2+10n-17=0

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Solution for 10n^2+10n-17=0 equation:


Simplifying
10n2 + 10n + -17 = 0

Reorder the terms:
-17 + 10n + 10n2 = 0

Solving
-17 + 10n + 10n2 = 0

Solving for variable 'n'.

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

Divide each side by '10'.
-1.7 + n + n2 = 0

Move the constant term to the right:

Add '1.7' to each side of the equation.
-1.7 + n + 1.7 + n2 = 0 + 1.7

Reorder the terms:
-1.7 + 1.7 + n + n2 = 0 + 1.7

Combine like terms: -1.7 + 1.7 = 0.0
0.0 + n + n2 = 0 + 1.7
n + n2 = 0 + 1.7

Combine like terms: 0 + 1.7 = 1.7
n + n2 = 1.7

The n term is n.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + n2 = 1.7 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + n2 = 1.7 + 0.25

Combine like terms: 1.7 + 0.25 = 1.95
1.25 + n2 = 1.95

Factor a perfect square on the left side:
(n + 0.5)(n + 0.5) = 1.95

Calculate the square root of the right side: 1.396424004

Break this problem into two subproblems by setting 
(n + 0.5) equal to 1.396424004 and -1.396424004.

Subproblem 1

n + 0.5 = 1.396424004 Simplifying n + 0.5 = 1.396424004 Reorder the terms: 0.5 + n = 1.396424004 Solving 0.5 + n = 1.396424004 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + n = 1.396424004 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = 1.396424004 + -0.5 n = 1.396424004 + -0.5 Combine like terms: 1.396424004 + -0.5 = 0.896424004 n = 0.896424004 Simplifying n = 0.896424004

Subproblem 2

n + 0.5 = -1.396424004 Simplifying n + 0.5 = -1.396424004 Reorder the terms: 0.5 + n = -1.396424004 Solving 0.5 + n = -1.396424004 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + n = -1.396424004 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = -1.396424004 + -0.5 n = -1.396424004 + -0.5 Combine like terms: -1.396424004 + -0.5 = -1.896424004 n = -1.896424004 Simplifying n = -1.896424004

Solution

The solution to the problem is based on the solutions from the subproblems. n = {0.896424004, -1.896424004}

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