7x-1/x+7

Simple and best practice solution for 7x-1/x+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 7x-1/x+7 equation: 


D( x )

x = 0

x = 0

x = 0

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

7*x-(1/x)+7 = 0

7*x-x^-1+7 = 0

7*x^1-1*x^-1+7*x^0 = 0

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

x^1*(7*x^2+7*x^1-1*x^0) = 0

x^1

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

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

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

DELTA = 77

DELTA > 0

x = (77^(1/2)-7)/(2*7) or x = (-77^(1/2)-7)/(2*7)

x = (77^(1/2)-7)/14 or x = (-(77^(1/2)+7))/14

x in { (-(77^(1/2)+7))/14, (77^(1/2)-7)/14} 

x in { (-(77^(1/2)+7))/14, (77^(1/2)-7)/14 }

See similar equations:

| 8=-12+(k)/4 | | -5x^2+9x-3=0 | | -4=7x-1/-8 | | 2y+9=4 | | 3/4=(4m-4)/6 | | ((x+3)/(x-1))-1=(x-5)/(x-4) | | 3(15+x)=9 | | C(Q)=20+3Q | | 5c+3=147c*35 | | 3(15+x)=120 | | (u-6)/(u-4)=((u+3)/(u+6))+1 | | 5x-88=2x-13 | | 5c+3=c+147*35 | | x^4-10x^3+9=0 | | ((v+4)/(v+3))+1=(v-7)/(v-1) | | -8c-5=27x-4 | | (5+(4/(v+6)))=(6/((v+1)(v+6))) | | 2.8x-3(2x-1)=2.8-3.19x | | 12*(13/4x+5/8)=-61/2 | | 6-(5/(y+2))=((-4)/(y-1)) | | 18x*12=4x*60 | | 0=-6v^2-15v-12 | | 2*3x+1=3 | | 2=2x/(1.15-x)(1.15-x) | | 2x*3+1=3 | | 12-8=10x+4 | | z^2+1=0 | | 12x-3=x-186*72 | | 4x=113 | | C(Q)=30+3Q | | 4x=1113 | | 5x+95*6=10 |

Equations solver categories