Question

find the leasr number which must be subtracted from 1989 as to get a perfect square. also find the square root of the perfect square obtained by division method​

Answer 1

Answer:

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Step-by-step explanation:

factorise 1989 . You will get 3×3×13×17 . now 3 is the smallest number here right ? So 3 is the answer. Now for square root :

3×3×13×17

to take out the square root :

3×13×17= 664

Hope it helps

Answer 2

Answer:

53

Step-by-step explanation:

1989 is the nearest square root of 44

So, we will square 44

we get 1936

now we will subtract 1936 from 1989

we get 53

therefore 53 is the answer

Now getting the square root of 1936 by division method

(given in the photo)

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