Question

Simplify.
(
7
6
)
2
(7
6
)
2

Answer 1

Interpret (7 above 6) as the binomial coefficient C(7,6). C(7,6) = 7.

Then (C(7,6))^2 (C(7,6))^2 = 7^2 · 7^2 = 7^4 = 2401.