Question

find the least number which must be added to 425 to get a perfect square and also find the square root of this number by long division method​

Answer 1

Answer:

21^2=441

no to be added is 16

Answer 2

Answer:

16

Step-by-step explanation:

21^2=441

then, 441-425 = 16

425+16=441

therefore

$\sqrt{441}$

is equal to 21