x-10/x+21

Simple and best practice solution for x-10/x+21 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 x-10/x+21 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

x-(10/x)+21 = 0

x-10*x^-1+21 = 0

1*x^1-10*x^-1+21*x^0 = 0

(1*x^2+21*x^1-10*x^0)/(x^1) = 0 // * x^2

x^1*(1*x^2+21*x^1-10*x^0) = 0

x^1

x^2+21*x-10 = 0

x^2+21*x-10 = 0

DELTA = 21^2-(-10*1*4)

DELTA = 481

DELTA > 0

x = (481^(1/2)-21)/(1*2) or x = (-481^(1/2)-21)/(1*2)

x = (481^(1/2)-21)/2 or x = (-(481^(1/2)+21))/2

x in { (-(481^(1/2)+21))/2, (481^(1/2)-21)/2} 

x in { (-(481^(1/2)+21))/2, (481^(1/2)-21)/2 }

See similar equations:

| 6+2x=5x+6 | | 1/3m-5=m | | Y=-16x^2+80x | | -6(a+8)=-4(a+6) | | 5x+1=7x-9 | | 5(.2+c)=3.5 | | 2mn+6mn-5mn= | | -3j^6*12j= | | 5(1/5+c)=31/2 | | c/15=8.8 | | -4p+3=-(1+4p) | | X/2-7=-6 | | 4.2+5+3.9+x=21.5 | | 5x+10=6x-6 | | 180=90+4x+10 | | 6n=-78 | | 4(4x^2+4x+8)=0 | | 6/4=n/24 | | x^3-10x^2=0 | | x+2X+3x/2=180 | | 4+4+x=13 | | (5a/9)-(3a/5)=(-4/3) | | (5m)/(11m+11)+(m+1)/(5m) | | 3x+7y=-18 | | x=1000+-7X | | 4x-2(x-3)=18 | | 8t+23=27 | | -(5m-7)=3(1-3m) | | 3e^6x-5=9 | | (y-3xy+2)=0 | | 1/3(x+4)=1/5(x+2) | | 4(20x+50)=920 |

Equations solver categories