21n^2+14n-53=3

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Solution for 21n^2+14n-53=3 equation:


Simplifying
21n2 + 14n + -53 = 3

Reorder the terms:
-53 + 14n + 21n2 = 3

Solving
-53 + 14n + 21n2 = 3

Solving for variable 'n'.

Reorder the terms:
-53 + -3 + 14n + 21n2 = 3 + -3

Combine like terms: -53 + -3 = -56
-56 + 14n + 21n2 = 3 + -3

Combine like terms: 3 + -3 = 0
-56 + 14n + 21n2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(-8 + 2n + 3n2) = 0

Factor a trinomial.
7((-2 + -1n)(4 + -3n)) = 0

Ignore the factor 7.

Subproblem 1

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

Subproblem 2

Set the factor '(4 + -3n)' equal to zero and attempt to solve: Simplifying 4 + -3n = 0 Solving 4 + -3n = 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 + -3n = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -3n = 0 + -4 -3n = 0 + -4 Combine like terms: 0 + -4 = -4 -3n = -4 Divide each side by '-3'. n = 1.333333333 Simplifying n = 1.333333333

Solution

n = {-2, 1.333333333}

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