5n^2+4=9n

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Solution for 5n^2+4=9n equation:


Simplifying
5n2 + 4 = 9n

Reorder the terms:
4 + 5n2 = 9n

Solving
4 + 5n2 = 9n

Solving for variable 'n'.

Reorder the terms:
4 + -9n + 5n2 = 9n + -9n

Combine like terms: 9n + -9n = 0
4 + -9n + 5n2 = 0

Factor a trinomial.
(4 + -5n)(1 + -1n) = 0

Subproblem 1

Set the factor '(4 + -5n)' equal to zero and attempt to solve: Simplifying 4 + -5n = 0 Solving 4 + -5n = 0 Move all terms containing n to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -5n = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -5n = 0 + -4 -5n = 0 + -4 Combine like terms: 0 + -4 = -4 -5n = -4 Divide each side by '-5'. n = 0.8 Simplifying n = 0.8

Subproblem 2

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

Solution

n = {0.8, 1}

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