3n^2+75=30n

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Solution for 3n^2+75=30n equation:


Simplifying
3n2 + 75 = 30n

Reorder the terms:
75 + 3n2 = 30n

Solving
75 + 3n2 = 30n

Solving for variable 'n'.

Reorder the terms:
75 + -30n + 3n2 = 30n + -30n

Combine like terms: 30n + -30n = 0
75 + -30n + 3n2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(25 + -10n + n2) = 0

Factor a trinomial.
3((5 + -1n)(5 + -1n)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(5 + -1n)' equal to zero and attempt to solve: Simplifying 5 + -1n = 0 Solving 5 + -1n = 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 + -1n = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1n = 0 + -5 -1n = 0 + -5 Combine like terms: 0 + -5 = -5 -1n = -5 Divide each side by '-1'. n = 5 Simplifying n = 5

Subproblem 2

Set the factor '(5 + -1n)' equal to zero and attempt to solve: Simplifying 5 + -1n = 0 Solving 5 + -1n = 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 + -1n = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1n = 0 + -5 -1n = 0 + -5 Combine like terms: 0 + -5 = -5 -1n = -5 Divide each side by '-1'. n = 5 Simplifying n = 5

Solution

n = {5, 5}

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