(5n+29)(n-8)=8

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Solution for (5n+29)(n-8)=8 equation:


Simplifying
(5n + 29)(n + -8) = 8

Reorder the terms:
(29 + 5n)(n + -8) = 8

Reorder the terms:
(29 + 5n)(-8 + n) = 8

Multiply (29 + 5n) * (-8 + n)
(29(-8 + n) + 5n * (-8 + n)) = 8
((-8 * 29 + n * 29) + 5n * (-8 + n)) = 8
((-232 + 29n) + 5n * (-8 + n)) = 8
(-232 + 29n + (-8 * 5n + n * 5n)) = 8
(-232 + 29n + (-40n + 5n2)) = 8

Combine like terms: 29n + -40n = -11n
(-232 + -11n + 5n2) = 8

Solving
-232 + -11n + 5n2 = 8

Solving for variable 'n'.

Reorder the terms:
-232 + -8 + -11n + 5n2 = 8 + -8

Combine like terms: -232 + -8 = -240
-240 + -11n + 5n2 = 8 + -8

Combine like terms: 8 + -8 = 0
-240 + -11n + 5n2 = 0

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

Divide each side by '5'.
-48 + -2.2n + n2 = 0

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + -2.2n + 48 + n2 = 0 + 48

Reorder the terms:
-48 + 48 + -2.2n + n2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + -2.2n + n2 = 0 + 48
-2.2n + n2 = 0 + 48

Combine like terms: 0 + 48 = 48
-2.2n + n2 = 48

The n term is -2.2n.  Take half its coefficient (-1.1).
Square it (1.21) and add it to both sides.

Add '1.21' to each side of the equation.
-2.2n + 1.21 + n2 = 48 + 1.21

Reorder the terms:
1.21 + -2.2n + n2 = 48 + 1.21

Combine like terms: 48 + 1.21 = 49.21
1.21 + -2.2n + n2 = 49.21

Factor a perfect square on the left side:
(n + -1.1)(n + -1.1) = 49.21

Calculate the square root of the right side: 7.014983963

Break this problem into two subproblems by setting 
(n + -1.1) equal to 7.014983963 and -7.014983963.

Subproblem 1

n + -1.1 = 7.014983963 Simplifying n + -1.1 = 7.014983963 Reorder the terms: -1.1 + n = 7.014983963 Solving -1.1 + n = 7.014983963 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '1.1' to each side of the equation. -1.1 + 1.1 + n = 7.014983963 + 1.1 Combine like terms: -1.1 + 1.1 = 0.0 0.0 + n = 7.014983963 + 1.1 n = 7.014983963 + 1.1 Combine like terms: 7.014983963 + 1.1 = 8.114983963 n = 8.114983963 Simplifying n = 8.114983963

Subproblem 2

n + -1.1 = -7.014983963 Simplifying n + -1.1 = -7.014983963 Reorder the terms: -1.1 + n = -7.014983963 Solving -1.1 + n = -7.014983963 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '1.1' to each side of the equation. -1.1 + 1.1 + n = -7.014983963 + 1.1 Combine like terms: -1.1 + 1.1 = 0.0 0.0 + n = -7.014983963 + 1.1 n = -7.014983963 + 1.1 Combine like terms: -7.014983963 + 1.1 = -5.914983963 n = -5.914983963 Simplifying n = -5.914983963

Solution

The solution to the problem is based on the solutions from the subproblems. n = {8.114983963, -5.914983963}

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