3n^2+4n-20=0

Solution for 3n^2+4n-20=0 equation:

Simplifying
3n2 + 4n + -20 = 0

Reorder the terms:
-20 + 4n + 3n2 = 0

Solving
-20 + 4n + 3n2 = 0

Solving for variable 'n'.

Factor a trinomial.
(-10 + -3n)(2 + -1n) = 0

Subproblem 1
Set the factor '(-10 + -3n)' equal to zero and attempt to solve:

Simplifying
-10 + -3n = 0

Solving
-10 + -3n = 0

Move all terms containing n to the left, all other terms to the right.

Add '10' to each side of the equation.
-10 + 10 + -3n = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -3n = 0 + 10
-3n = 0 + 10

Combine like terms: 0 + 10 = 10
-3n = 10

Divide each side by '-3'.
n = -3.333333333

Simplifying
n = -3.333333333
Subproblem 2
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
Solution
n = {-3.333333333, 2}