9x2+27x/21x2+9x

Simple and best practice solution for 9x2+27x/21x2+9x 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 9x2+27x/21x2+9x equation: 


x in (-oo:+oo)

((27*x)/21)*x^2+9*x^2+9*x = 0

9/7*x^3+9*x^2+9*x = 0

9*x*(1/7*x^2+x+1) = 0

1/7*x^2+x+1 = 0

DELTA = 1^2-(1/7*1*4)

DELTA = 3/7

DELTA > 0

x = ((3/7)^(1/2)-1)/(1/7*2) or x = (-(3/7)^(1/2)-1)/(1/7*2)

x = 7/2*((3/7)^(1/2)-1) or x = -7/2*((3/7)^(1/2)+1)

9*x = 0

9*x = 0 // : 9

x = 0

x in { -7/2*((3/7)^(1/2)+1), 7/2*((3/7)^(1/2)-1), 0 }

See similar equations:

| 0.4x^2-4x+8.4= | | 160=9.7x | | 5/x=4/3x | | 20.00+6.00x=20 | | f=50+n-40/4 | | 2(x+8)=3(x+4) | | 4x^2+20x=-16 | | (x+4)=(2x-5) | | 1539=17.7x | | 4(8+6x)=104 | | 1.2x+1.2-5.4=-10 | | 2n-12n-14=0 | | -3(-2+2x)=-30 | | -4(t-5)+7t=9t-1 | | 783=7x | | 4(2x-3)-9(x+2)=0 | | 3z-1=7z-2 | | 100+15x=25+20x | | 195=6.4x | | 4(x+3)/3=2x-5 | | -4d=14 | | 5x=249.6 | | 4+2(x+3)=24 | | 4n+1.6=N | | 8x-3=3x+12 | | ((3)(2.5))-3(-2.5)+(-6)=x | | 4x+x^2=32 | | /2+4.82=2.57 | | -7=-11 | | 50000+100x= | | 2x+30=30+x | | 2(x+8)+2=18 |

Equations solver categories