(4x+9)(8x-9)=0

Simple and best practice solution for (4x+9)(8x-9)=0 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 (4x+9)(8x-9)=0 equation: 


Simplifying
(4x + 9)(8x + -9) = 0

Reorder the terms:
(9 + 4x)(8x + -9) = 0

Reorder the terms:
(9 + 4x)(-9 + 8x) = 0

Multiply (9 + 4x) * (-9 + 8x)
(9(-9 + 8x) + 4x * (-9 + 8x)) = 0
((-9 * 9 + 8x * 9) + 4x * (-9 + 8x)) = 0
((-81 + 72x) + 4x * (-9 + 8x)) = 0
(-81 + 72x + (-9 * 4x + 8x * 4x)) = 0
(-81 + 72x + (-36x + 32x2)) = 0

Combine like terms: 72x + -36x = 36x
(-81 + 36x + 32x2) = 0

Solving
-81 + 36x + 32x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -4x)(9 + -8x) = 0


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

Simplifying
-9 + -4x = 0

Solving
-9 + -4x = 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 + -4x = 0 + 9

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

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

Divide each side by '-4'.
x = -2.25

Simplifying
x = -2.25

Subproblem 2
Set the factor '(9 + -8x)' equal to zero and attempt to solve:

Simplifying
9 + -8x = 0

Solving
9 + -8x = 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 + -8x = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -8x = 0 + -9
-8x = 0 + -9

Combine like terms: 0 + -9 = -9
-8x = -9

Divide each side by '-8'.
x = 1.125

Simplifying
x = 1.125
Solution
x = {-2.25, 1.125}

See similar equations:

| -33=4(w-3)-7w | | a=35w+250 | | 5y-20=94 | | .06s+16000=.13s | | x/3-6=-19 | | 1.70=(x+3) | | 5x-56=24 | | 3(2x-50)=6(x-4)+9 | | (2x+5)=(3x-5) | | 5t^2-2+3=0 | | x/4-6=-19 | | 2x-1/19=x/10 | | -23+c=-19 | | 4[7-(6x-7)]+8x=0 | | 10b+6=3b+8 | | 10x-105=-285 | | 2x-10=162 | | 4v+15b=459 | | 9x+8=-55 | | t+1.9=3.9 | | 0=-16t^2+5t+400 | | 5/6z=17/8 | | 2x+4=-(-7x-6) | | 400=-16t^2+5t+400 | | 2(x+4)=2(2x+6) | | 73m+36=-1205 | | 0.2x+6=4 | | 3*2y+7-2y=3 | | 12x^2-60x+73=0 | | -4+y=-12 | | 6y+4=58 | | 5a+3b=15 |

Equations solver categories