5n^2-28=-13n

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Solution for 5n^2-28=-13n equation:


Simplifying
5n2 + -28 = -13n

Reorder the terms:
-28 + 5n2 = -13n

Solving
-28 + 5n2 = -13n

Solving for variable 'n'.

Reorder the terms:
-28 + 13n + 5n2 = -13n + 13n

Combine like terms: -13n + 13n = 0
-28 + 13n + 5n2 = 0

Factor a trinomial.
(-4 + -1n)(7 + -5n) = 0

Subproblem 1

Set the factor '(-4 + -1n)' equal to zero and attempt to solve: Simplifying -4 + -1n = 0 Solving -4 + -1n = 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 + -1n = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1n = 0 + 4 -1n = 0 + 4 Combine like terms: 0 + 4 = 4 -1n = 4 Divide each side by '-1'. n = -4 Simplifying n = -4

Subproblem 2

Set the factor '(7 + -5n)' equal to zero and attempt to solve: Simplifying 7 + -5n = 0 Solving 7 + -5n = 0 Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -5n = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -5n = 0 + -7 -5n = 0 + -7 Combine like terms: 0 + -7 = -7 -5n = -7 Divide each side by '-5'. n = 1.4 Simplifying n = 1.4

Solution

n = {-4, 1.4}

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