Question

Write 80 as a product of primes.
Use index notation when giving your answer.

Answer 1

Answer:

2^4 * 5

Step-by-step explanation:

Answer 2

Answer:

80 = $2^{4}$ × 5

Step-by-step explanation:

Divide repeatedly by 2 until finish, then divide by next  largest prime number

80 ÷ 2 = 40

40 ÷ 2 = 20

20 ÷  2= 10

10 ÷ 2 = 5

5 ÷ 5 = 1 ← Finish when 1 is reached

Then 80 = 2 × 2 × 2 × 2 × 5 = $2^{4}$ × 5