2n^2+5n-4=-7

Solution for 2n^2+5n-4=-7 equation:

Simplifying
2n2 + 5n + -4 = -7

Reorder the terms:
-4 + 5n + 2n2 = -7

Solving
-4 + 5n + 2n2 = -7

Solving for variable 'n'.

Reorder the terms:
-4 + 7 + 5n + 2n2 = -7 + 7

Combine like terms: -4 + 7 = 3
3 + 5n + 2n2 = -7 + 7

Combine like terms: -7 + 7 = 0
3 + 5n + 2n2 = 0

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

Subproblem 1
Set the factor '(3 + 2n)' equal to zero and attempt to solve:

Simplifying
3 + 2n = 0

Solving
3 + 2n = 0

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

Add '-3' to each side of the equation.
3 + -3 + 2n = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 2n = 0 + -3
2n = 0 + -3

Combine like terms: 0 + -3 = -3
2n = -3

Divide each side by '2'.
n = -1.5

Simplifying
n = -1.5
Subproblem 2
Set the factor '(1 + n)' equal to zero and attempt to solve:

Simplifying
1 + n = 0

Solving
1 + n = 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 + n = 0 + -1

Combine like terms: 1 + -1 = 0
0 + n = 0 + -1
n = 0 + -1

Combine like terms: 0 + -1 = -1
n = -1

Simplifying
n = -1
Solution
n = {-1.5, -1}