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Nikhil Vaghela · Answer 1 · 2018-09-22T11:23:27+0000

i am assuming i must find X.
first we find that 4 times 4 is 16 then we subtract 16 from 9 which results in 5.
now lets try the question (5-4)^2=9 the square roots of 5 and 4 are 25 and 16
25-16 is 9 so the length should be 5

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