5n^2-8n=4

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Solution for 5n^2-8n=4 equation:


Simplifying
5n2 + -8n = 4

Reorder the terms:
-8n + 5n2 = 4

Solving
-8n + 5n2 = 4

Solving for variable 'n'.

Reorder the terms:
-4 + -8n + 5n2 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + -8n + 5n2 = 0

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

Subproblem 1

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

Subproblem 2

Set the factor '(2 + -1n)' equal to zero and attempt to solve: Simplifying 2 + -1n = 0 Solving 2 + -1n = 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 + -1n = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1n = 0 + -2 -1n = 0 + -2 Combine like terms: 0 + -2 = -2 -1n = -2 Divide each side by '-1'. n = 2 Simplifying n = 2

Solution

n = {-0.4, 2}

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