-237=-8(4n+6)5n

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Solution for -237=-8(4n+6)5n equation:


Simplifying
-237 = -8(4n + 6) * 5n

Reorder the terms:
-237 = -8(6 + 4n) * 5n

Reorder the terms for easier multiplication:
-237 = -8 * 5n(6 + 4n)

Multiply -8 * 5
-237 = -40n(6 + 4n)
-237 = (6 * -40n + 4n * -40n)
-237 = (-240n + -160n2)

Solving
-237 = -240n + -160n2

Solving for variable 'n'.

Reorder the terms:
-237 + 240n + 160n2 = -240n + 240n + -160n2 + 160n2

Combine like terms: -240n + 240n = 0
-237 + 240n + 160n2 = 0 + -160n2 + 160n2
-237 + 240n + 160n2 = -160n2 + 160n2

Combine like terms: -160n2 + 160n2 = 0
-237 + 240n + 160n2 = 0

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

Divide each side by '160'.
-1.48125 + 1.5n + n2 = 0

Move the constant term to the right:

Add '1.48125' to each side of the equation.
-1.48125 + 1.5n + 1.48125 + n2 = 0 + 1.48125

Reorder the terms:
-1.48125 + 1.48125 + 1.5n + n2 = 0 + 1.48125

Combine like terms: -1.48125 + 1.48125 = 0.00000
0.00000 + 1.5n + n2 = 0 + 1.48125
1.5n + n2 = 0 + 1.48125

Combine like terms: 0 + 1.48125 = 1.48125
1.5n + n2 = 1.48125

The n term is 1.5n.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5n + 0.5625 + n2 = 1.48125 + 0.5625

Reorder the terms:
0.5625 + 1.5n + n2 = 1.48125 + 0.5625

Combine like terms: 1.48125 + 0.5625 = 2.04375
0.5625 + 1.5n + n2 = 2.04375

Factor a perfect square on the left side:
(n + 0.75)(n + 0.75) = 2.04375

Calculate the square root of the right side: 1.429597846

Break this problem into two subproblems by setting 
(n + 0.75) equal to 1.429597846 and -1.429597846.

Subproblem 1

n + 0.75 = 1.429597846 Simplifying n + 0.75 = 1.429597846 Reorder the terms: 0.75 + n = 1.429597846 Solving 0.75 + n = 1.429597846 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + n = 1.429597846 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + n = 1.429597846 + -0.75 n = 1.429597846 + -0.75 Combine like terms: 1.429597846 + -0.75 = 0.679597846 n = 0.679597846 Simplifying n = 0.679597846

Subproblem 2

n + 0.75 = -1.429597846 Simplifying n + 0.75 = -1.429597846 Reorder the terms: 0.75 + n = -1.429597846 Solving 0.75 + n = -1.429597846 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + n = -1.429597846 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + n = -1.429597846 + -0.75 n = -1.429597846 + -0.75 Combine like terms: -1.429597846 + -0.75 = -2.179597846 n = -2.179597846 Simplifying n = -2.179597846

Solution

The solution to the problem is based on the solutions from the subproblems. n = {0.679597846, -2.179597846}

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