Question 233658
(t-2)^2=-16
t-2 = sqrt(-16) = ±4i
t = 2 + 4i
t = 2 - 4i
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{{{t^2 - 4t + 20 = 0}}}
*[invoke quadratic t,1,-4,20]
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I don't know why the solver multiplied by 10, but the results are the same.