2.1=(2.1+1.2)(x2.12.1)/(2.1+12)(2.1-2.1)

Solution for 2.1=(2.1+1.2)(x2.12.1)/(2.1+12)(2.1-2.1) equation:

2.1=(2.1+1.2)(x2.12.1)/(2.1+12)(2.1-2.1)

We move all terms to the left:

2.1-((2.1+1.2)(x2.12.1)/(2.1+12)(2.1-2.1))=0

We add all the numbers together, and all the variables

-((3.3)(+x2.12.1)/(14.1)0)+2.1=0

We multiply parentheses ..

-((+3.3x^2)/(14.1)0)+2.1=0

We multiply all the terms by the denominator


-((+3.3x^2)+(2.1)*(14.1)0)=0


We calculate terms in parentheses: -((+3.3x^2)+(2.1)*(14.1)0), so:

(+3.3x^2)+(2.1)*(14.1)0

We add all the numbers together, and all the variables

(+3.3x^2)

We get rid of parentheses

3.3x^2

Back to the equation:

-(3.3x^2)


We get rid of parentheses

-3.3x^2=0

a = -3.3; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-3.3)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{-6.6}=0$