(2n+5)(n-8)=0

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Solution for (2n+5)(n-8)=0 equation:


Simplifying
(2n + 5)(n + -8) = 0

Reorder the terms:
(5 + 2n)(n + -8) = 0

Reorder the terms:
(5 + 2n)(-8 + n) = 0

Multiply (5 + 2n) * (-8 + n)
(5(-8 + n) + 2n * (-8 + n)) = 0
((-8 * 5 + n * 5) + 2n * (-8 + n)) = 0
((-40 + 5n) + 2n * (-8 + n)) = 0
(-40 + 5n + (-8 * 2n + n * 2n)) = 0
(-40 + 5n + (-16n + 2n2)) = 0

Combine like terms: 5n + -16n = -11n
(-40 + -11n + 2n2) = 0

Solving
-40 + -11n + 2n2 = 0

Solving for variable 'n'.

Factor a trinomial.
(-5 + -2n)(8 + -1n) = 0

Subproblem 1

Set the factor '(-5 + -2n)' equal to zero and attempt to solve: Simplifying -5 + -2n = 0 Solving -5 + -2n = 0 Move all terms containing n to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -2n = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2n = 0 + 5 -2n = 0 + 5 Combine like terms: 0 + 5 = 5 -2n = 5 Divide each side by '-2'. n = -2.5 Simplifying n = -2.5

Subproblem 2

Set the factor '(8 + -1n)' equal to zero and attempt to solve: Simplifying 8 + -1n = 0 Solving 8 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1n = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1n = 0 + -8 -1n = 0 + -8 Combine like terms: 0 + -8 = -8 -1n = -8 Divide each side by '-1'. n = 8 Simplifying n = 8

Solution

n = {-2.5, 8}

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