Question

Please help with #14

Answer 1

h(t)=(t-1)^2-(t+1)^2

0=(t-1)^2-(t+1)^2

(t+1)^2=(t-1)^2

t^2+2t+1=t^2-2t+1

2t+1=-2t+1

4t+1=1

4t=0

t=0

There is one zero at t=0