(x^2-2x-15)/(x-4)

Simple and best practice solution for (x^2-2x-15)/(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 (x^2-2x-15)/(x-4) equation: 


D( x )

x-4 = 0

x-4 = 0

x-4 = 0

x-4 = 0 // + 4

x = 4

x in (-oo:4) U (4:+oo)

(x^2-(2*x)-15)/(x-4) = 0

(x^2-2*x-15)/(x-4) = 0

x^2-2*x-15 = 0

x^2-2*x-15 = 0

DELTA = (-2)^2-(-15*1*4)

DELTA = 64

DELTA > 0

x = (64^(1/2)+2)/(1*2) or x = (2-64^(1/2))/(1*2)

x = 5 or x = -3

(x+3)*(x-5) = 0

((x+3)*(x-5))/(x-4) = 0

( x+3 )

x+3 = 0 // - 3

x = -3

( x-5 )

x-5 = 0 // + 5

x = 5

x in { -3, 5 }

See similar equations:

| 64+5y=84 | | -4(0)-y=-10 | | 49=0.25x+0.10y | | -18+36-36-36+12x=-14 | | 7x+13y=2 | | 2x-a^2=2a(2+x) | | 49=25x+10y | | -4.56=T-3.1 | | =2x^2-7x+5 | | 139+w=400 | | (y-8)(y-2)=0 | | 18+x=-24 | | 28y+-4+4+40+10y=-2 | | (t+7)(t-3)=0 | | =(5y-3)(2y-7) | | 4x+2x=-3-3 | | 48+12n+-10n+-45=18 | | (1.08)*(1.08)=x | | 9t-7=11 | | Y=2x-3-5 | | -7.24q=17 | | 9=d+2 | | 2x=12-3x | | 3b+2a-c=18 | | 10-(0.25x+0.10)=49-(25x+10x) | | x+x^2+x^3+x^4+x^5=21.2 | | X-3=9x+52 | | 18pqrs+45q^2ra-27qrs= | | N-2=n+7 | | s^3-s^2+1=0 | | 25x+10x=49 | | 14/40(500-x)=0 |

Equations solver categories