Question

Answer
a) 4x4x4x5x5 using index notation

b) 9x7x9x9x7x9 using index notation

Answer 1

4^3x5^2, 7^2x9^4

Explanation:

Where a^b means a to the power b. When writing on paper b should be small and above and to the right of a. Keep the bottom numbers in order, so 4 before 5 and so on. In a there are 3 4s and 2 5s, hence the answer. Same reasoning for b.

Answer 2

a) 4^3 × 5^2

b) 9^4 × 7^2

Explanation:

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