8n^2-3n+10+-3n^2-6n-7=

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Solution for 8n^2-3n+10+-3n^2-6n-7= equation:


Simplifying
8n2 + -3n + 10 + -3n2 + -6n + -7 = 0

Reorder the terms:
10 + -7 + -3n + -6n + 8n2 + -3n2 = 0

Combine like terms: 10 + -7 = 3
3 + -3n + -6n + 8n2 + -3n2 = 0

Combine like terms: -3n + -6n = -9n
3 + -9n + 8n2 + -3n2 = 0

Combine like terms: 8n2 + -3n2 = 5n2
3 + -9n + 5n2 = 0

Solving
3 + -9n + 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'.
0.6 + -1.8n + n2 = 0

Move the constant term to the right:

Add '-0.6' to each side of the equation.
0.6 + -1.8n + -0.6 + n2 = 0 + -0.6

Reorder the terms:
0.6 + -0.6 + -1.8n + n2 = 0 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + -1.8n + n2 = 0 + -0.6
-1.8n + n2 = 0 + -0.6

Combine like terms: 0 + -0.6 = -0.6
-1.8n + n2 = -0.6

The n term is -1.8n.  Take half its coefficient (-0.9).
Square it (0.81) and add it to both sides.

Add '0.81' to each side of the equation.
-1.8n + 0.81 + n2 = -0.6 + 0.81

Reorder the terms:
0.81 + -1.8n + n2 = -0.6 + 0.81

Combine like terms: -0.6 + 0.81 = 0.21
0.81 + -1.8n + n2 = 0.21

Factor a perfect square on the left side:
(n + -0.9)(n + -0.9) = 0.21

Calculate the square root of the right side: 0.458257569

Break this problem into two subproblems by setting 
(n + -0.9) equal to 0.458257569 and -0.458257569.

Subproblem 1

n + -0.9 = 0.458257569 Simplifying n + -0.9 = 0.458257569 Reorder the terms: -0.9 + n = 0.458257569 Solving -0.9 + n = 0.458257569 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + n = 0.458257569 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + n = 0.458257569 + 0.9 n = 0.458257569 + 0.9 Combine like terms: 0.458257569 + 0.9 = 1.358257569 n = 1.358257569 Simplifying n = 1.358257569

Subproblem 2

n + -0.9 = -0.458257569 Simplifying n + -0.9 = -0.458257569 Reorder the terms: -0.9 + n = -0.458257569 Solving -0.9 + n = -0.458257569 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + n = -0.458257569 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + n = -0.458257569 + 0.9 n = -0.458257569 + 0.9 Combine like terms: -0.458257569 + 0.9 = 0.441742431 n = 0.441742431 Simplifying n = 0.441742431

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.358257569, 0.441742431}

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