Question

1) Using Prime factorisation method, find which of the following numbers are perfect squares.
(a) 11025 (b) 1089
(C) 6292

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Answer 1

this is answer of this question 3×5×7=105 ,3×11=33,

Answer 2

Step-by-step explanation:

(a) 11025

= 3 × 3 × 5 × 5 × 7 ×7

= 3² × 5² × 7²

= 3 × 5 × 7

= 105

(b) 1089

= 3 × 3 × 11 × 11

= 3² × 11²

= 3 × 11 = 33

(c) 6292

= 2 × 2 × 11 × 11 × 13

so it is not a perfect square