25.9=15t-5t^2

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Solution for 25.9=15t-5t^2 equation: 



25.9=15t-5t^2

We move all terms to the left:

25.9-(15t-5t^2)=0

We get rid of parentheses

5t^2-15t+25.9=0

a = 5; b = -15; c = +25.9;
Δ = b2-4ac
Δ = -152-4·5·25.9
Δ = -293
Delta is less than zero, so there is no solution for the equation

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