(9-x)(5x+8)=0

Simple and best practice solution for (9-x)(5x+8)=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 (9-x)(5x+8)=0 equation: 


Simplifying
(9 + -1x)(5x + 8) = 0

Reorder the terms:
(9 + -1x)(8 + 5x) = 0

Multiply (9 + -1x) * (8 + 5x)
(9(8 + 5x) + -1x * (8 + 5x)) = 0
((8 * 9 + 5x * 9) + -1x * (8 + 5x)) = 0
((72 + 45x) + -1x * (8 + 5x)) = 0
(72 + 45x + (8 * -1x + 5x * -1x)) = 0
(72 + 45x + (-8x + -5x2)) = 0

Combine like terms: 45x + -8x = 37x
(72 + 37x + -5x2) = 0

Solving
72 + 37x + -5x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(9 + -1x)(8 + 5x) = 0


Subproblem 1
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

Subproblem 2
Set the factor '(8 + 5x)' equal to zero and attempt to solve:

Simplifying
8 + 5x = 0

Solving
8 + 5x = 0

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

Add '-8' to each side of the equation.
8 + -8 + 5x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 5x = 0 + -8
5x = 0 + -8

Combine like terms: 0 + -8 = -8
5x = -8

Divide each side by '5'.
x = -1.6

Simplifying
x = -1.6
Solution
x = {9, -1.6}

See similar equations:

| 250/100*2 | | 2a+4=4a+6 | | 13-5x=3x+7 | | y=45x+25/5 | | 5y-25=45x | | 3x(x^2-4x)+(x-2)(x^2+3x)=0 | | 4x^3-11x^2-6x=0 | | (6x-5a)(3a-4x)=(2b-3x)(8x+5b) | | Y[-3]=14 | | 2logx-log(1-x)=log(2-x) | | 5-k=14 | | x+1/4x=50 | | 15=x+.06+.15x | | 2000q^2+5000q-3120=0 | | 4y+2=32 | | X=152 | | r^14-3r+2=0 | | 4m+7=-2m-3 | | -5n+2=58+2n | | 360=80+90+5x+4x+10 | | 360=2(5x+5)+4x | | 144.66=19.95+65.32+.99m | | 55.20=3(5.30g+2.50) | | 1/2(5x-9)=17 | | x-35=-20 | | 3x+6=4(x+1) | | 19.50-80p=-780.50 | | 3x+6=3(x+1) | | 115=40+5m | | 8x^2+43x=30 | | 3x+6=3(x+1)-9x | | 3x+6=8x+10-4x |

Equations solver categories