Question

do number 1.............​

Answer 1

Step-by-step explanation:

we know that 20²=400 and 21² = 441

A. no. 425, is not a perfect square, so we have to add no. to make it 441 as it is 21².

so , let x be the no. be added.

x = 441 - 425

therefore x = 16

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