Question

find zeroes of t^3 - 2t^2 - 15t

Answer 1

t = 5 and -3 and 0 . This is a cubic equation so at first take t as a common then will will turn into quadratic equation and then solve

Answer 2

t^3-2t^2-15t=t{t^2-2t-15}

t{t^2-5t+3t-15}

t{t{t-5}+3{t-5]}

t({t+3} and (t-5)

t=5 and t=-3 and t=0