Respuesta :

Answer:

see explanation

Step-by-step explanation:

(a)

4 × 4 = 4²

(b)

5 × 5 × 5 × 5 = [tex]5^{4}[/tex]

(c)

3 × 7 × 7 × 7 × 7 = 3 × [tex]7^{4}[/tex]

(d)

2 × 9 × 9 × 9 × 2 × 9 ← rearrange

= 2 × 2 × 9 × 9 × 9 × 9

= 2² × [tex]9^{4}[/tex]