Question

answer quickly
please I will report.​

Answer 1

Step-by-step explanation:

here is your answer and once try to solve it yourself

Answer 2

120

Step-by-step explanation:

Given, s=1 and t = 5

8s^2(t^2-2st)

=8(1)^2 (5^2 - 2 (1×5))

= 8 (25 - 10)

= 8(15)

= 120