240=-16t^2+64t+80

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Solution for 240=-16t^2+64t+80 equation: 



240=-16t^2+64t+80

We move all terms to the left:

240-(-16t^2+64t+80)=0

We get rid of parentheses

16t^2-64t-80+240=0

We add all the numbers together, and all the variables

16t^2-64t+160=0

a = 16; b = -64; c = +160;
Δ = b2-4ac
Δ = -642-4·16·160
Δ = -6144
Delta is less than zero, so there is no solution for the equation

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