(k+10)(k+10)=

Solution for (k+10)(k+10)= equation:

(k+10)(k+10)=

We move all terms to the left:

(k+10)(k+10)-()=0

We add all the numbers together, and all the variables

(k+10)(k+10)=0

We multiply parentheses ..

(+k^2+10k+10k+100)=0

We get rid of parentheses

k^2+10k+10k+100=0

We add all the numbers together, and all the variables

k^2+20k+100=0

a = 1; b = 20; c = +100;
Δ = b2-4ac
Δ = 202-4·1·100
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$k=\frac{-b}{2a}=\frac{-20}{2}=-10$