Question

Find the least number which must be subtracted from 1989 so as to get a perfect square. Also find the square root of  the perfect square so obtained.     ​

Answer 1

53 is the least number to be subtracted from the given number (1989) to get a perfect square and 1989 - 53 = 1936.

Answer 2

Answer:

We have,

1989 be make perfect square.

We know that,

44

2

=1936<1989

45

2

=2025>1989

Let x be added or subtracted in 1989

Then,

x+44

2

=1989

⇒x+1936=1989

⇒x=1989−1936

⇒x=53

53 is subtracted from 1989 making perfect square.

Hence, this is the answer.

Step-by-step explanation:

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