find the least number , which must be subtracted from 645 to make perfect square
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1^2 = 1
2^2 = 4
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.
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25^2 = 625
26^2 = 676
You can see that 645 lies between the squares of 25 and 26, but we need to only subtract, hence we are aiming for 625.
645 - 625
=20
Hence 20 should be subtracted from 645 to make perfect square.
2^2 = 4
.
.
.
25^2 = 625
26^2 = 676
You can see that 645 lies between the squares of 25 and 26, but we need to only subtract, hence we are aiming for 625.
645 - 625
=20
Hence 20 should be subtracted from 645 to make perfect square.
tanyagarg2252:
i also want division method
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