Question

(t+k)×(t+k)×(t+k)×(t+k)

Answer 1

(t+k)×(t+k)×(t+k)×(t+k)
(t+k)^1×(t+k)^1×(t+k)^1×(t+k)^1
(t+k)^1+^1+^1+^1
(t+k)^4