r=8,988*10^9*20*10^-9*120*10^-9/3,5*10^-6

Solution for r=8,988*10^9*20*10^-9*120*10^-9/3,5*10^-6 equation:

r=8.988*10^9*20*10^-9*120*10^-9/3.5*10^-6

We move all terms to the left:

r-(8.988*10^9*20*10^-9*120*10^-9/3.5*10^-6)=0

We get rid of parentheses

r+6-8.988*10^9*20*10^+9*120*10^+9/3.5*10^=0

We multiply all the terms by the denominator


r*3.5*10^+9+6*3.5*10^-(8.988*10^9*20*10^)*3.5*10^+(9*120*10^)*3.5*10^=0

We add all the numbers together, and all the variables

r*3.5*10^=0

Wy multiply elements

35r^2=0

a = 35; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·35·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$r=\frac{-b}{2a}=\frac{0}{70}=0$