280=-5t2

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Solution for 280=-5t2 equation: 



280=-5t^2

We move all terms to the left:

280-(-5t^2)=0

We get rid of parentheses

5t^2+280=0

a = 5; b = 0; c = +280;
Δ = b2-4ac
Δ = 02-4·5·280
Δ = -5600
Delta is less than zero, so there is no solution for the equation

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