6n^2-10n-13=-4

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Solution for 6n^2-10n-13=-4 equation:


Simplifying
6n2 + -10n + -13 = -4

Reorder the terms:
-13 + -10n + 6n2 = -4

Solving
-13 + -10n + 6n2 = -4

Solving for variable 'n'.

Reorder the terms:
-13 + 4 + -10n + 6n2 = -4 + 4

Combine like terms: -13 + 4 = -9
-9 + -10n + 6n2 = -4 + 4

Combine like terms: -4 + 4 = 0
-9 + -10n + 6n2 = 0

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

Divide each side by '6'.
-1.5 + -1.666666667n + n2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -1.666666667n + 1.5 + n2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -1.666666667n + n2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -1.666666667n + n2 = 0 + 1.5
-1.666666667n + n2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-1.666666667n + n2 = 1.5

The n term is -1.666666667n.  Take half its coefficient (-0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
-1.666666667n + 0.6944444447 + n2 = 1.5 + 0.6944444447

Reorder the terms:
0.6944444447 + -1.666666667n + n2 = 1.5 + 0.6944444447

Combine like terms: 1.5 + 0.6944444447 = 2.1944444447
0.6944444447 + -1.666666667n + n2 = 2.1944444447

Factor a perfect square on the left side:
(n + -0.8333333335)(n + -0.8333333335) = 2.1944444447

Calculate the square root of the right side: 1.481365736

Break this problem into two subproblems by setting 
(n + -0.8333333335) equal to 1.481365736 and -1.481365736.

Subproblem 1

n + -0.8333333335 = 1.481365736 Simplifying n + -0.8333333335 = 1.481365736 Reorder the terms: -0.8333333335 + n = 1.481365736 Solving -0.8333333335 + n = 1.481365736 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + n = 1.481365736 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + n = 1.481365736 + 0.8333333335 n = 1.481365736 + 0.8333333335 Combine like terms: 1.481365736 + 0.8333333335 = 2.3146990695 n = 2.3146990695 Simplifying n = 2.3146990695

Subproblem 2

n + -0.8333333335 = -1.481365736 Simplifying n + -0.8333333335 = -1.481365736 Reorder the terms: -0.8333333335 + n = -1.481365736 Solving -0.8333333335 + n = -1.481365736 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + n = -1.481365736 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + n = -1.481365736 + 0.8333333335 n = -1.481365736 + 0.8333333335 Combine like terms: -1.481365736 + 0.8333333335 = -0.6480324025 n = -0.6480324025 Simplifying n = -0.6480324025

Solution

The solution to the problem is based on the solutions from the subproblems. n = {2.3146990695, -0.6480324025}

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