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

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


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

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

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

Multiply (-2 + 5n) * (5 + 2n)
(-2(5 + 2n) + 5n * (5 + 2n)) = 0
((5 * -2 + 2n * -2) + 5n * (5 + 2n)) = 0
((-10 + -4n) + 5n * (5 + 2n)) = 0
(-10 + -4n + (5 * 5n + 2n * 5n)) = 0
(-10 + -4n + (25n + 10n2)) = 0

Combine like terms: -4n + 25n = 21n
(-10 + 21n + 10n2) = 0

Solving
-10 + 21n + 10n2 = 0

Solving for variable 'n'.

Factor a trinomial.
(-5 + -2n)(2 + -5n) = 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 '(2 + -5n)' equal to zero and attempt to solve: Simplifying 2 + -5n = 0 Solving 2 + -5n = 0 Move all terms containing n to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -5n = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5n = 0 + -2 -5n = 0 + -2 Combine like terms: 0 + -2 = -2 -5n = -2 Divide each side by '-5'. n = 0.4 Simplifying n = 0.4

Solution

n = {-2.5, 0.4}

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