n^2-19n+10=0

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Solution for n^2-19n+10=0 equation:


Simplifying
n2 + -19n + 10 = 0

Reorder the terms:
10 + -19n + n2 = 0

Solving
10 + -19n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + -19n + -10 + n2 = 0 + -10

Reorder the terms:
10 + -10 + -19n + n2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -19n + n2 = 0 + -10
-19n + n2 = 0 + -10

Combine like terms: 0 + -10 = -10
-19n + n2 = -10

The n term is -19n.  Take half its coefficient (-9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
-19n + 90.25 + n2 = -10 + 90.25

Reorder the terms:
90.25 + -19n + n2 = -10 + 90.25

Combine like terms: -10 + 90.25 = 80.25
90.25 + -19n + n2 = 80.25

Factor a perfect square on the left side:
(n + -9.5)(n + -9.5) = 80.25

Calculate the square root of the right side: 8.958236434

Break this problem into two subproblems by setting 
(n + -9.5) equal to 8.958236434 and -8.958236434.

Subproblem 1

n + -9.5 = 8.958236434 Simplifying n + -9.5 = 8.958236434 Reorder the terms: -9.5 + n = 8.958236434 Solving -9.5 + n = 8.958236434 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + n = 8.958236434 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + n = 8.958236434 + 9.5 n = 8.958236434 + 9.5 Combine like terms: 8.958236434 + 9.5 = 18.458236434 n = 18.458236434 Simplifying n = 18.458236434

Subproblem 2

n + -9.5 = -8.958236434 Simplifying n + -9.5 = -8.958236434 Reorder the terms: -9.5 + n = -8.958236434 Solving -9.5 + n = -8.958236434 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + n = -8.958236434 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + n = -8.958236434 + 9.5 n = -8.958236434 + 9.5 Combine like terms: -8.958236434 + 9.5 = 0.541763566 n = 0.541763566 Simplifying n = 0.541763566

Solution

The solution to the problem is based on the solutions from the subproblems. n = {18.458236434, 0.541763566}

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