z-4/z-8=5/7

Simple and best practice solution for z-4/z-8=5/7 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 z-4/z-8=5/7 equation: 


D( z )

z = 0

z = 0

z = 0

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

z-(4/z)-8 = 5/7 // - 5/7

z-(4/z)-(5/7)-8 = 0

z-4*z^-1-5/7-8 = 0

1*z^1-4*z^-1-61/7*z^0 = 0

(1*z^2-61/7*z^1-4*z^0)/(z^1) = 0 // * z^2

z^1*(1*z^2-61/7*z^1-4*z^0) = 0

z^1

z^2+(-61/7)*z-4 = 0

z^2+(-61/7)*z-4 = 0

DELTA = (-61/7)^2-(-4*1*4)

DELTA = 4505/49

DELTA > 0

z = ((4505/49)^(1/2)-(-61/7))/(1*2) or z = (-(-61/7)-(4505/49)^(1/2))/(1*2)

z = ((4505/49)^(1/2)+61/7)/2 or z = (61/7-(4505/49)^(1/2))/2

z in { (61/7-(4505/49)^(1/2))/2, ((4505/49)^(1/2)+61/7)/2} 

z in { (61/7-(4505/49)^(1/2))/2, ((4505/49)^(1/2)+61/7)/2 }

See similar equations:

| -12=-7v-42-8v-48 | | (2xy)+(3xy)= | | -8(x+2)+2x+5=5x+10 | | -1/2x-8+4=7/x-4 | | -18+x=-8 | | x^2-xy=xy+3y^2 | | 11y+4= | | (6x^2-18)=(5x^2-7x) | | y+-1=-20 | | 16k+4q-20k= | | 3x-2(x+5)=12-3x | | 2(4x+3)=3(3x+5) | | 4.3*4+8*4= | | 5-3(8-8x)=0 | | 525+0.21x=525+0.13x | | 7+5x-3=9x+13-3x | | 6-5(8x+7)=2 | | 2/5a*6/7a^2 | | y=7/9(-7) | | 7/2(8x-4)=3 | | f(x)=13x-4 | | y=7/9(0)-7 | | -x-2=-x^2-x+2 | | 3-7(5-5x)=0 | | 2a^2+ab=3b^2 | | 4-9(8x+6)=3 | | 5.1q-5.3-5.2q=-1.1q-4.3 | | 8/5(x-4)=7 | | 3x=y+7r | | 11+6x=2x-3 | | 525.00+0.21x=525.00+0.31x | | 3x6 |

Equations solver categories