(x-9)(x+3)=

Simple and best practice solution for (x-9)(x+3)= equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

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


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

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

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

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

Combine like terms: -9x + 3x = -6x
(-27 + -6x + x2) = 0

Solving
-27 + -6x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-3 + -1x)(9 + -1x) = 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 '(9 + -1x)' equal to zero and attempt to solve:

Simplifying
9 + -1x = 0

Solving
9 + -1x = 0

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

Add '-9' to each side of the equation.
9 + -9 + -1x = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = 0 + -9
-1x = 0 + -9

Combine like terms: 0 + -9 = -9
-1x = -9

Divide each side by '-1'.
x = 9

Simplifying
x = 9
Solution
x = {-3, 9}

See similar equations:

| 3+0-15+5= | | (x-5)(x-1)= | | (x+6)(x+8)= | | 3+0-15=5 | | (x-8)(x-9)= | | -9y=5(0)+2 | | (x-3)(x-5)= | | -8-3-11= | | (x+2)(x+7)= | | 7t=-49 | | (x-9)(x-2)= | | 4-3-2-5= | | 10+-5= | | 10+-4= | | -10+-4= | | 27=h+(-8) | | 12+-3= | | -4-9= | | 102=p-(-130) | | 7(0)-4y=3 | | 7-11= | | z+(-22)=-96 | | 15-29+50= | | 4+t=16 | | -12+31-13= | | m-11=33 | | -4+27+-52+2= | | 9=w+(-8) | | x+23=55 | | 7x-9=3x-45 | | 6h-8=25 | | -x-7=-5 |

Equations solver categories