40=-16t^2+40t+5

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Solution for 40=-16t^2+40t+5 equation: 



40=-16t^2+40t+5

We move all terms to the left:

40-(-16t^2+40t+5)=0

We get rid of parentheses

16t^2-40t-5+40=0

We add all the numbers together, and all the variables

16t^2-40t+35=0

a = 16; b = -40; c = +35;
Δ = b2-4ac
Δ = -402-4·16·35
Δ = -640
Delta is less than zero, so there is no solution for the equation

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