Answer:
Your question doesn’t make sense homie
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
Note that n! = n(n - 1)(n - 2) ..... × 3 × 2 × 1, thus
7! = 7 × 6 × 5 × 4 × 3 × 2 × 1
5! = 5 × 4 × 3 × 2 × 1
2! = 2 × 1
Hence
cancel 5 × 4 × 3 × 2 × 1 on numerator/ denominator, leaving
=
= 21
<span>(x - 8) (x + 8)
= x^2 - 8x + 8x -64
= x^2 - 64</span>