Question

z=5t+3i+t(t-4)i Determinate t so z=real numbers

Answer 1

For z to be a real number, t(t-4)=-3

Answer 2

Now, can u solve for t

Answer 3

z= 3 and 1?

Answer 4

Nope, solve for t

Answer 5

so t=3 and 1

Answer 6

t(t-4)=-3
t^2-4t+3=0

Answer 7

YEP, t= 3 and 1

Answer 8

Thanks ! =)

Answer 9

:)yw