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

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



9(x-4)-4(x+9)x=4
We move all terms to the left:
9(x-4)-4(x+9)x-(4)=0
We multiply parentheses
-4x^2+9x-36x-36-4=0
We add all the numbers together, and all the variables
-4x^2-27x-40=0
a = -4; b = -27; c = -40;
Δ = b2-4ac
Δ = -272-4·(-4)·(-40)
Δ = 89
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-27)-\sqrt{89}}{2*-4}=\frac{27-\sqrt{89}}{-8} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-27)+\sqrt{89}}{2*-4}=\frac{27+\sqrt{89}}{-8} $

See similar equations:

| 12+m=3m+6-m | | 3x-5/4-x=2/5 | | x/3-17=28 | | 3x(x^2-1)2(-x^2+1)=0 | | 3x(x^2-x)2(-x^2+1)=0 | | 3x(x^2-x)+2(-x^2+1)=0 | | (34000+130x)/x=200 | | 62x+72(40-x)=68×40 | | 9x+160=300 | | 1m=17÷5-7 | | x-(3x/4+(5/4))=3x-(1/2) | | x-(3x/4+5/4)=3x-(1/2) | | 3^x+2=150 | | 8x-1(3x+10)=15 | | x-(3x+5/4)=3x-(1/2) | | (-18)^-1÷x=6^-1 | | 7x+1=7-3x | | 3x+17=29-2x | | 7x+60=76-3x | | 16-(2x+4)=0 | | 9-2x-(x+1)=3x | | 28x+(4x-3)=0 | | 5n-4=20+n | | 2x-3*8=10 | | 4x−5=35 | | (2y+5)=180 | | 9x-8x*4+3=2 | | 4(4x-3)+2=6x+20 | | 6(8-2x)=6(2x-8) | | 6n-5=20+n | | 4y-2(y-9)=34 | | -16=x-(8+2x) |

Equations solver categories