Find the prime factorisation of each of these numbers and write it using index notations a) 45
b) 150
c) 48
d) 126
e) 120

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1. 45

 /\

3×15

2.152

  /\

 2×75

3.48

/\

2×24

4.126

/\

2×63

5 .120

/\

2×60

Step-by-step explanation:

1. 45 = 3 × 3 × 5...45 =3^2 × 5

2. 150 = 2 × 3 × 5 × 5 150 = 2 × 3 × 5^2

3. 48 = 2 × 2 × 2 × 2 × 348 = 2^4 × 3

4.126 = 2 × 3 × 3 × 7 126 = 2 × 32 × 7

5.120 = 2 × 2 × 2 × 3 × 5...120 = 23 × 3 × 5

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