Question

(t2 - 3)2 - 3 = 2 × (t2 - 2t)

Answer 1

2(t^2-3)-3=2(t^2-2t)
2t^2 - 9 = 2(t^2 - 2t)
2t^2 - 9 =2t^2 - 4t
4t-9 = 0
4t=9
t = 9/4