4x^2-23x-15=-9

Solution for 4x^2-23x-15=-9 equation:

Simplifying
4x2 + -23x + -15 = -9

Reorder the terms:
-15 + -23x + 4x2 = -9

Solving
-15 + -23x + 4x2 = -9

Solving for variable 'x'.

Reorder the terms:
-15 + 9 + -23x + 4x2 = -9 + 9

Combine like terms: -15 + 9 = -6
-6 + -23x + 4x2 = -9 + 9

Combine like terms: -9 + 9 = 0
-6 + -23x + 4x2 = 0

Factor a trinomial.
(-1 + -4x)(6 + -1x) = 0

Subproblem 1
Set the factor '(-1 + -4x)' equal to zero and attempt to solve:

Simplifying
-1 + -4x = 0

Solving
-1 + -4x = 0

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

Add '1' to each side of the equation.
-1 + 1 + -4x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -4x = 0 + 1
-4x = 0 + 1

Combine like terms: 0 + 1 = 1
-4x = 1

Divide each side by '-4'.
x = -0.25

Simplifying
x = -0.25
Subproblem 2
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
Solution
x = {-0.25, 6}