9=56/x-2x

Simple and best practice solution for 9=56/x-2x 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=56/x-2x equation:



9=56/x-2x
We move all terms to the left:
9-(56/x-2x)=0
Domain of the equation: x-2x)!=0
x∈R
We add all the numbers together, and all the variables
-(-2x+56/x)+9=0
We get rid of parentheses
2x-56/x+9=0
We multiply all the terms by the denominator
2x*x+9*x-56=0
We add all the numbers together, and all the variables
9x+2x*x-56=0
Wy multiply elements
2x^2+9x-56=0
a = 2; b = 9; c = -56;
Δ = b2-4ac
Δ = 92-4·2·(-56)
Δ = 529
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{529}=23$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(9)-23}{2*2}=\frac{-32}{4} =-8 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(9)+23}{2*2}=\frac{14}{4} =3+1/2 $

See similar equations:

| 3y+9+7y=39+4y | | –y−4y+–9=11 | | 19x+(3x+5)=10 | | -1.2(3r-3)=4(3r+0.9) | | -x/4=-43 | | 3x=0.30x+54 | | p/11+3=-1 | | -2(-4-6x)=13+2x | | 8x-7-10-6x=15 | | 1÷2÷n=3 | | 11.2+0.2x=16 | | .24m=12.4 | | 8(x+2=48)=48 | | 2e=4e-161 | | -1.2(3r-3)=4(3r+9) | | 4x10=2x28 | | -33=y/8 | | -3(-4x+4)=-72 | | 150=200–x | | x–28=-24 | | 6x-2(7x-3)=-2x+30 | | 68−2y=4y | | 8x+20=8x | | -80+13x=8x+70 | | 35t+4=10 | | 12-8x=22-3x | | 9=3b+6 | | 24x+18x=420 | | 5x+8=1x+9 | | 3(3k+5)=87 | | 8w-22=-2(w+1) | | 9x113x7=-1 |

Equations solver categories