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16t^2+48t+40=4
We move all terms to the left:
16t^2+48t+40-(4)=0
We add all the numbers together, and all the variables
16t^2+48t+36=0
a = 16; b = 48; c = +36;
Δ = b2-4ac
Δ = 482-4·16·36
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$t=\frac{-b}{2a}=\frac{-48}{32}=-1+1/2$
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