Find the smallest positive integer with which one has to multiply each of the following numbers to get a perfect square:
(i) 847; (ii) 450; (iii) 1445; (iv) 1352.
(i) 847 = 7 × 11 × 11
847 × 7 = 7 × 7 × 11 × 11
Hence, the required integer is 7.
(ii) 450 = 2 × 3 × 3 × 5 × 5
450 × 2 = 2 × 2 × 3 × 3 × 5 × 5
Hence, the required integer is 2.
(iii) 1445 = 5 × 17 × 17
1445 × 5 = 5 × 5 × 17 × 17
Hence, the required integer is 5.
(iv) 1352 = 2 × 2 × 2 × 13 × 13
1352 × 2 = 2 × 2 × 2 × 2 × 13 × 13
Hence, the required integer is 2.