75=10t-5t^2

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Solution for 75=10t-5t^2 equation: 



75=10t-5t^2

We move all terms to the left:

75-(10t-5t^2)=0

We get rid of parentheses

5t^2-10t+75=0

a = 5; b = -10; c = +75;
Δ = b2-4ac
Δ = -102-4·5·75
Δ = -1400
Delta is less than zero, so there is no solution for the equation

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