25x(.45x)=40x(.25x)

Solution for 25x(.45x)=40x(.25x) equation:

25x(.45x)=40x(.25x)

We move all terms to the left:

25x(.45x)-(40x(.25x))=0

We add all the numbers together, and all the variables

25x(+.45x)-(40x(+.25x))=0

We multiply parentheses

25x^2-(40x(+.25x))=0


We calculate terms in parentheses: -(40x(+.25x)), so:

40x(+.25x)

We multiply parentheses

40x^2

Back to the equation:

-(40x^2)


We add all the numbers together, and all the variables

-15x^2=0

a = -15; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-15)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{-30}=0$