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Mathematics

Find the least number that must be subtracted from 980 so as to get a perfect square. Also, find the square root of the perfect number obtained.

Sq & Sq Roots

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Answer

Find the least number that must be subtracted from 980 so as to get a perfect square. Also, find the square root of the perfect number obtained. Squares and Square Roots, Concise Mathematics Solutions ICSE Class 8.

∴ If 19 is subtracted from 980, the resulting number will be a perfect square.

Hence, 19 should be subtracted from 980 and 961=31\sqrt{961} = 31.

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