(9x-4)(x+3)=0

Solution for (9x-4)(x+3)=0 equation:

Simplifying
(9x + -4)(x + 3) = 0

Reorder the terms:
(-4 + 9x)(x + 3) = 0

Reorder the terms:
(-4 + 9x)(3 + x) = 0

Multiply (-4 + 9x) * (3 + x)
(-4(3 + x) + 9x * (3 + x)) = 0
((3 * -4 + x * -4) + 9x * (3 + x)) = 0
((-12 + -4x) + 9x * (3 + x)) = 0
(-12 + -4x + (3 * 9x + x * 9x)) = 0
(-12 + -4x + (27x + 9x2)) = 0

Combine like terms: -4x + 27x = 23x
(-12 + 23x + 9x2) = 0

Solving
-12 + 23x + 9x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-3 + -1x)(4 + -9x) = 0

Subproblem 1
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
Subproblem 2
Set the factor '(4 + -9x)' equal to zero and attempt to solve:

Simplifying
4 + -9x = 0

Solving
4 + -9x = 0

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

Add '-4' to each side of the equation.
4 + -4 + -9x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -9x = 0 + -4
-9x = 0 + -4

Combine like terms: 0 + -4 = -4
-9x = -4

Divide each side by '-9'.
x = 0.4444444444

Simplifying
x = 0.4444444444
Solution
x = {-3, 0.4444444444}