25.2=10.5t-4.9t^2

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Solution for 25.2=10.5t-4.9t^2 equation: 



25.2=10.5t-4.9t^2

We move all terms to the left:

25.2-(10.5t-4.9t^2)=0

We get rid of parentheses

4.9t^2-10.5t+25.2=0

a = 4.9; b = -10.5; c = +25.2;
Δ = b2-4ac
Δ = -10.52-4·4.9·25.2
Δ = -383.67
Delta is less than zero, so there is no solution for the equation

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