70=-12t-4.9t^2

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Solution for 70=-12t-4.9t^2 equation: 



70=-12t-4.9t^2

We move all terms to the left:

70-(-12t-4.9t^2)=0

We get rid of parentheses

4.9t^2+12t+70=0

a = 4.9; b = 12; c = +70;
Δ = b2-4ac
Δ = 122-4·4.9·70
Δ = -1228
Delta is less than zero, so there is no solution for the equation

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