Question

Write 128 as a product of primes. Use index notation when giving your answer.

Answer 1

Answer:

128 = 2 x 2 x 2 x 2 x 2 x 2 x 2

Step-by-step explanation:

128 = 2 x 64

      = 2 x (8 x 8)

      = 2 x (2 x 2 x 2) x (2 x 2 x 2)

Answer 2

SOLUTION

TO DETERMINE

Write 128 as a product of primes.

Use index notation

EVALUATION

Here the given number is 128

We now prime factorise the given number

128 = 2 × 2 × 2 × 2 × 2 × 2 × 2

We now write the given number in index notation as below

Numbers 2's in prime factorisation of 128 = 7

Thus we have

$\sf 128 = {2}^{7}$

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