Only questions 5 and 7 thank u
1 answer:
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Answer:
see explanation
Step-by-step explanation:
(a)
4 × 4 = 4²
(b)
5 × 5 × 5 × 5 =
(c)
3 × 7 × 7 × 7 × 7 = 3 ×
(d)
2 × 9 × 9 × 9 × 2 × 9 ← rearrange
= 2 × 2 × 9 × 9 × 9 × 9
= 2² ×