-20=0.01x^2+0.7x+120/x

Solution for -20=0.01x^2+0.7x+120/x equation:

-20=0.01x^2+0.7x+120/x

We move all terms to the left:

-20-(0.01x^2+0.7x+120/x)=0


Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R


We get rid of parentheses

-0.01x^2-0.7x-120/x-20=0

We multiply all the terms by the denominator


-(0.01x^2)*x-(0.7x)*x-20*x-120=0

We add all the numbers together, and all the variables

-(0.01x^2)*x-(+0.7x)*x-20*x-120=0

We add all the numbers together, and all the variables

-20x-(0.01x^2)*x-(+0.7x)*x-120=0

We multiply parentheses

-0x^2-0x^2-20x-120=0

We add all the numbers together, and all the variables

-2x^2-20x-120=0

a = -2; b = -20; c = -120;
Δ = b2-4ac
Δ = -202-4·(-2)·(-120)
Δ = -560
Delta is less than zero, so there is no solution for the equation