144=(-16t^2)+64t+80

Solution for 144=(-16t^2)+64t+80 equation:

144=(-16t^2)+64t+80

We move all terms to the left:

144-((-16t^2)+64t+80)=0


We calculate terms in parentheses: -((-16t^2)+64t+80), so:

(-16t^2)+64t+80

We get rid of parentheses

-16t^2+64t+80

Back to the equation:

-(-16t^2+64t+80)


We get rid of parentheses

16t^2-64t-80+144=0

We add all the numbers together, and all the variables

16t^2-64t+64=0

a = 16; b = -64; c = +64;
Δ = b2-4ac
Δ = -642-4·16·64
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$t=\frac{-b}{2a}=\frac{64}{32}=2$