3n^2-8=5n

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Solution for 3n^2-8=5n equation:


Simplifying
3n2 + -8 = 5n

Reorder the terms:
-8 + 3n2 = 5n

Solving
-8 + 3n2 = 5n

Solving for variable 'n'.

Reorder the terms:
-8 + -5n + 3n2 = 5n + -5n

Combine like terms: 5n + -5n = 0
-8 + -5n + 3n2 = 0

Factor a trinomial.
(-1 + -1n)(8 + -3n) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(8 + -3n)' equal to zero and attempt to solve: Simplifying 8 + -3n = 0 Solving 8 + -3n = 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 + -3n = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -3n = 0 + -8 -3n = 0 + -8 Combine like terms: 0 + -8 = -8 -3n = -8 Divide each side by '-3'. n = 2.666666667 Simplifying n = 2.666666667

Solution

n = {-1, 2.666666667}

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