7=7t-5t^2

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Solution for 7=7t-5t^2 equation: 



7=7t-5t^2

We move all terms to the left:

7-(7t-5t^2)=0

We get rid of parentheses

5t^2-7t+7=0

a = 5; b = -7; c = +7;
Δ = b2-4ac
Δ = -72-4·5·7
Δ = -91
Delta is less than zero, so there is no solution for the equation

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