Question

find the least number which must be subtracted from 63520 to make it a perfect square?​

Answer 1

Answer:

16 ans

Step-by-step explanation:

63520|252

4

45 |235

225

502 |1020

1004

If we replace the portion 20 of the number 63520 by 04 then it will be a perfect square number . So 20–04 = 16 is to be subtracted

Ans 16

Another process

Our number is 63520

200^2=40000

250^2=(200+50)^2 =40000+2×200×50 +2500 =40000+20000+2500 =62500

251^2=(250+1)^2 =250^2+2×250+1^2 =62500+501 =63001

252^2=(251+1)^2=63001+2×251+1 = 63001+502+1 =63504

63520–63504=16

Ans 16