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63.4=-9.8t^2+45t*1
We move all terms to the left:
63.4-(-9.8t^2+45t*1)=0
We get rid of parentheses
9.8t^2-45t*1+63.4=0
Wy multiply elements
9.8t^2-45t+63.4=0
a = 9.8; b = -45; c = +63.4;
Δ = b2-4ac
Δ = -452-4·9.8·63.4
Δ = -460.28
Delta is less than zero, so there is no solution for the equation
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