(x+4)(x-1)-14=0

Solution for (x+4)(x-1)-14=0 equation:

Simplifying
(x + 4)(x + -1) + -14 = 0

Reorder the terms:
(4 + x)(x + -1) + -14 = 0

Reorder the terms:
(4 + x)(-1 + x) + -14 = 0

Multiply (4 + x) * (-1 + x)
(4(-1 + x) + x(-1 + x)) + -14 = 0
((-1 * 4 + x * 4) + x(-1 + x)) + -14 = 0
((-4 + 4x) + x(-1 + x)) + -14 = 0
(-4 + 4x + (-1 * x + x * x)) + -14 = 0
(-4 + 4x + (-1x + x2)) + -14 = 0

Combine like terms: 4x + -1x = 3x
(-4 + 3x + x2) + -14 = 0

Reorder the terms:
-4 + -14 + 3x + x2 = 0

Combine like terms: -4 + -14 = -18
-18 + 3x + x2 = 0

Solving
-18 + 3x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-6 + -1x)(3 + -1x) = 0

Subproblem 1
Set the factor '(-6 + -1x)' equal to zero and attempt to solve:

Simplifying
-6 + -1x = 0

Solving
-6 + -1x = 0

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

Add '6' to each side of the equation.
-6 + 6 + -1x = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -1x = 0 + 6
-1x = 0 + 6

Combine like terms: 0 + 6 = 6
-1x = 6

Divide each side by '-1'.
x = -6

Simplifying
x = -6
Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve:

Simplifying
3 + -1x = 0

Solving
3 + -1x = 0

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

Add '-3' to each side of the equation.
3 + -3 + -1x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1x = 0 + -3
-1x = 0 + -3

Combine like terms: 0 + -3 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3
Solution
x = {-6, 3}