0=8.70t-((1/2)*9.8t^2)

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Solution for 0=8.70t-((1/2)*9.8t^2) equation: 


t in (-oo:+oo)

0 = 8.7*t-(9.8*(1/2)*t^2) // - 8.7*t-(9.8*(1/2)*t^2)

9.8*(1/2)*t^2-(8.7*t)+0 = 0

9.8*(1/2)*t^2-8.7*t = 0

4.9*t^2-8.7*t = 0

DELTA = (-8.7)^2-(0*4*4.9)

DELTA = 8.7^2

DELTA = 75.69

DELTA > 0

t = ((8.7^2)^(1/2)+8.7)/(2*4.9) or t = (8.7-(8.7^2)^(1/2))/(2*4.9)

t = 1.7755102 or t = 0

t in { 0, 1.7755102 }

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