15/r-1r=5

Simple and best practice solution for 15/r-1r=5 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 15/r-1r=5 equation: 


D( r )

r = 0

r = 0

r = 0

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

15/r-(1*r) = 5 // - 5

15/r-(1*r)-5 = 0

15/r-r-5 = 0

15*r^-1-1*r^1-5*r^0 = 0

(15*r^0-1*r^2-5*r^1)/(r^1) = 0 // * r^2

r^1*(15*r^0-1*r^2-5*r^1) = 0

r^1

15-r^2-5*r = 0

15-r^2-5*r = 0

DELTA = (-5)^2-(-1*4*15)

DELTA = 85

DELTA > 0

r = (85^(1/2)+5)/(-1*2) or r = (5-85^(1/2))/(-1*2)

r = (85^(1/2)+5)/(-2) or r = (5-85^(1/2))/(-2)

r in { (85^(1/2)+5)/(-2), (5-85^(1/2))/(-2)} 

r in { (85^(1/2)+5)/(-2), (5-85^(1/2))/(-2) }

See similar equations:

| 5x^2-5=115 | | x(p+4)=2x^2+4x+14 | | (4x+8)(8x^2+2x+9)= | | x^2(x+9)+4(x+9)= | | -5x7/11 | | a/26=44/100 | | 3(6+8)=9 | | 1/2x=3.50 | | 0.2x=0.5(x-6) | | 2000-400-n=600 | | 3-(6+8)=9 | | z/5=0.4 | | x^8(x+5)+7(x+5)= | | 6-6-8=0 | | 13+d+5=9 | | 3x+x+2x+3+5-15=360 | | 5a^2+40a+35=0 | | 300/12 | | 8x^3(6x^2-6x+4)= | | 1/2x=$3.50 | | 83x+(-166)=83x+166 | | -3+6+-1=2 | | -3+6-1=3 | | (4y+3)-(y+-2)=5y | | 39/13= | | -5y(6y+8)= | | x+0.7=2.5 | | 10-4(w+7)=2(1-w) | | K+-3=7 | | −9−1/5x= | | F(x)=-9x^2-8 | | x-0.7=-2.5 |

Equations solver categories