Question

Using the prime factorisation method, find which of the following
numbers are perfect squaresy
(i) 225
(ii) 189
(iii) 441
(iv) 729
(v) 1575
(vi) 900
Show that none of the following is a perfect square:
(i) 62
(ii) 143
(iii) 217
(iv) 168
(v) 90
(vi) 4000
​

Answer 1

Answer:

u can do it by using this method

225=5*45

45=5*9

9=3*3

prime factorisation:5*5*3*3=225

Step-by-step explanation:

Answer 2

Answer:

225 = 5×45

45=5×9

9=3×3

5×5×3×3=225