0=-9.8t^2+120t-400

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Solution for 0=-9.8t^2+120t-400 equation: 



0=-9.8t^2+120t-400

We move all terms to the left:

0-(-9.8t^2+120t-400)=0

We add all the numbers together, and all the variables

-(-9.8t^2+120t-400)=0

We get rid of parentheses

9.8t^2-120t+400=0

a = 9.8; b = -120; c = +400;
Δ = b2-4ac
Δ = -1202-4·9.8·400
Δ = -1280
Delta is less than zero, so there is no solution for the equation

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